FprEN 6122

• Abstract:

  This document specifies the configuration, dimensions, tolerances and mass of a stainless steel and titanium blind bolt with 130° flush head for aerospace applications.

• Status: Not Published
• Publication Date: 03-Jan-2027
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 3/S 2 - Fasteners
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 25-Oct-2026
• Completion Date: 25-Oct-2026
• Ref Project: kSIST FprEN 6122:2026 - Aerospace series - Blind bolt, 130° flush head, high strength

FprEN 6122 is a CEN draft European standard for an aerospace blind bolt with a 130° flush head and high strength. It specifies the configuration, dimensions, tolerances and mass of stainless steel and titanium versions, together with the related material, finish, lubrication, designation and marking rules. Engineers, buyers and quality teams use FprEN 6122 to select, identify and check the part for aerospace applications.

What does FprEN 6122 specify?

FprEN 6122 covers one fastener family: a blind bolt with a 130° flush head for aerospace use. The scope is focused on the part itself and the data needed to specify and inspect it, especially geometry, fit, installed performance, mass and identification.

The document is organized into seven clauses:

• Clause 1 - Scope
• Clause 2 - Normative references
• Clause 3 - Terms and definitions
• Clause 4 - Requirements
• Clause 5 - Designation
• Clause 6 - Marking
• Clause 7 - Technical specification

Clause 4 carries the main technical content, while Clauses 5 to 7 explain how to name the part, mark it, and apply the linked technical specification. The figures and tables provide the dimensional, performance and option data that make the standard usable on the shop floor and in procurement.

What are the key requirements of FprEN 6122?

Configuration, dimensions and installed performance

FprEN 6122 requires the fastener configuration, dimensions and tolerances to conform to Figure 1, Figure 2, Table 1 and Table 2. Figure 1 shows the bolt configuration and serrated pin geometry, and Figure 2 shows a typical installation. In practice, this is the core information for design and incoming inspection because it tells the user what the part looks like and what dimensional envelope it must fit.

The same clause also links the part to installed-performance requirements: static strength, tensile preload and spindle retention. Table 2 gives the minimum values by diameter code and material choice. This matters because the fastener is not only judged by size - it also has to meet the installed load requirements for the application.

Clause 4 notes that the shifting anvil/drive washer is supplied at the manufacturer’s option and is not part of the installed fastener. It also states that the blind side head may be installed on a 7° maximum slope. That helps installers understand what belongs to the fastener and what installation conditions are acceptable.

Grip range and mass

FprEN 6122 uses Table 3 to define the grip range for each diameter code and grip length code, including underlap and overlap values. Grip is the material thickness that the bolt can clamp, so this table is the key selection tool when matching the fastener to a joint stack-up.

Table 4 gives the mass in kg per 1 000 pieces for the different grip and diameter code combinations. For buyers and production planners, this supports part weight checks, packaging, logistics and cost estimation. It also helps when comparing stainless steel and titanium versions.

Material, finish and lubrication

FprEN 6122 ties each part combination to specific material, finish and lubrication options in Tables 5 and 6. The sleeve, serrated pin and locking collar are controlled separately, and the table links them to the allowed material codes and surface treatments.

The document allows passivation, blue anodizing for CP Titanium, and resin-based aluminium pigment coating for listed options. If lubrication is used, it is limited to the named lubricants in Clause 4.3, with manufacturer’s option among the listed products. In practice, this means the supplier cannot freely substitute coatings or lubricants if the part is being supplied to this standard.

First oversize, designation and marking

FprEN 6122 includes a first oversize identified by the letter X. Tables 7 to 10 give the dimensions, grip range and mass for that oversize version, and the oversize is limited to CRES. The practical point is that oversize parts are treated as a separate controlled variant, not just a larger nominal size.

Clause 5 defines the designation system. The example shows a structured code that combines the document number, material code, diameter code, grip length code, sleeve finish code and an optional X for oversize. This matters because the designation is how the exact part variant is ordered and recorded.

Clause 6 defines the marking rules. Marking follows EN 2424:2008 style B on the fastener head, with the EN standard number, grip length code and manufacturer’s identification required. Oversize bolts are marked with O on the head. That makes traceability and sorting easier in production, stores and maintenance.

Technical specification

Clause 7 states that the technical specification follows NASM 8975, except for the strength, preload and spindle retention requirements given in Table 2. This links FprEN 6122 to a broader fastener specification while keeping the key performance values specific to this standard.

What terms does FprEN 6122 use?

FprEN 6122 uses several recurring terms in its tables and designation system.

• Grip - the joint thickness the bolt is intended to clamp, used to select the correct grip length code.
• Grip range - the allowable thickness range for a given bolt size and grip code.
• Underlap - the lower part of the grip selection range shown in the grip tables.
• Overlap - the part of the grip selection range where adjacent grip lengths can both apply.
• Spindle retention - the minimum installed retention performance required for the spindle.
• Diameter code - the size code used in the designation and tables, such as 05 or 10.
• Oversize X - the first oversize version of the bolt identified in the tables and designation.

Who uses FprEN 6122?

FprEN 6122 is used by aerospace fastener manufacturers, design engineers, procurement teams, quality managers and inspection staff. Manufacturers use it to build the correct geometry and material combination, while engineers use it to select the bolt for a joint design.

Buyers and quality teams use it to write purchase descriptions, check markings, and verify that delivered parts match the required size, finish and performance class. Assembly and installation teams use the grip tables and installation notes to match the fastener to the joint stack-up.

What changed in FprEN 6122 from the previous edition?

FprEN 6122 will supersede prEN 6122:2005. The foreword states these technical changes:

• Figure 1 and Figure 2 were updated, and dimension Q was removed.
• Dimension Q was removed from Table 1.
• Table 1 and Table 3 were corrected for single values, and hole limits were removed.
• Table 5 and Table 6 were updated to match the revised normative references and preferred options.
• The oversize X was added.
• The document also notes the addition of the first oversize variant in the technical content.

Which standards are used with FprEN 6122?

Reference	What it contributes
EN 2424:2008	Marking of aerospace products, used for head marking in Clause 6.
EN 4473	Aluminium pigmented coatings for fasteners, used as one coating option in Table 6.
ISO 8080	Anodic treatment of titanium and titanium alloys, used for blue anodizing in Table 6.
ASTM B348	Titanium and titanium alloy bars and billets, used for titanium material sourcing.
DOD-L-85645	Dry film lubricant option named in Clause 4.3.
MIL-PRF-46010	Solid film lubricant option named in Clause 4.3.
NASM 8975	General fastener specification used by Clause 7, except for the performance values in Table 2.
SAE AMS2700	Passivation of corrosion resistant steels, used for the listed steel options.
SAE AMS4957	Titanium alloy round bar and wire, used for a titanium material option.
SAE AMS5687	Nickel alloy wire, used for one listed material option.
SAE AMS5690	Corrosion and heat resistant steel wire, used for a listed steel option.
SAE AMS5737	Corrosion and heat resistant steel stock, used for A-286 CRES options.
SAE AS5272	Solid film lubricant option named in Clause 4.3.
SAE AS87132	Cetyl alcohol lubricant option named in Clause 4.3.

What does the FprEN 6122 document contain?

FprEN 6122 contains two figures, ten main tables and a worked designation example. Figure 1 covers configuration and serrated pin geometry, and Figure 2 shows a typical installation. Tables 1, 7 and the related grip tables provide dimensions, tolerances and fit data; Tables 2, 4 and 10 provide performance and mass data. Tables 5 and 6 define the material, finish, lubrication and sleeve finish options, while Clauses 5 and 6 provide the designation and marking rules used for ordering, traceability and inspection.

SLOVENSKI STANDARD
oSIST prEN 6122:2024
01-oktober-2024
Aeronavtika - Slepa kovica, 130° ugrezna glava, visoka trdnost
Aerospace series - Blind bolt, 130° flush head, high strength
Luft- und Raumfahrt - Blindbolzen, 130° Senkkopf, hochfest
Série aérospatiale - Boulon aveugle, Tête fraisée 130°, haute résistance
Ta slovenski standard je istoveten z: prEN 6122
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
oSIST prEN 6122:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 6122:2024
oSIST prEN 6122:2024
DRAFT
EUROPEAN STANDARD
prEN 6122
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2024
ICS 49.030.20 Will supersede
English Version
Aerospace series - Blind bolt, 130° flush head, high
strength
Série aérospatiale - Boulon aveugle, Tête fraisée 130°, Luft- und Raumfahrt - Blindbolzen, 130° Senkkopf,
haute résistance hochfest
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 6122:2024 E
worldwide for CEN national Members.

oSIST prEN 6122:2024
prEN 6122:2024 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Requirements . 5
4.1 Configuration, dimensions, tolerances, static strength, preload and spindle retention . 5
4.2 Grip range and mass . 5
4.3 Material, finish and lubrication . 5
4.4 First oversize . 5
5 Designation . 22
6 Marking . 22
7 Technical specification . 22

oSIST prEN 6122:2024
prEN 6122:2024 (E)
European foreword
This document (prEN 6122:2024) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede prEN 6122:2005 .
This document includes the following significant technical changes with respect to prEN 6122:2005:
a) Figure 1 and Figure 2 updated (dimension Q removed);
b) dimension Q removed in Table 1 accordingly;
c) Table 1 and Table 3: Single values corrected and hole limits removed;
d) Table 5 and Table 6 updated according updated normative references and preferred options;
e) oversize “X” added in document.

Published by ASD-STAN, available at https://www.asd-stan.org.
oSIST prEN 6122:2024
prEN 6122:2024 (E)
1 Scope
This document specifies the configuration, dimensions, tolerances and mass of a stainless steel and
titanium blind bolt with 130° flush head for aerospace application.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2424:2008, Aerospace series — Marking of aerospace products
EN 4473, Aerospace series — Aluminium pigmented coatings for fasteners — Technical specification
ISO 8080, Aerospace — Anodic treatment of titanium and titanium alloys — Sulfuric acid process
ASTM B348, Standard Specification for Titanium and Titanium Alloy Bars and Billets
DOD-L-85645, Lubricant, Dry Film, Molecular Bonded
MIL-PRF-46010, Lubricant, Solid Film, Heat cured, Corrosion Inhibiting NATO Code – S-1738
NASM 8975, Fastener, Blind, High Strength, Installation Formed, Cres, Heat Resistant Steel and Titanium,
General Specification for
SAE AMS2700, Passivation of Corrosion Resistant Steels
SAE AMS4957, Titanium Alloy, Round Bar and Wire, 3Al-8V-6Cr-4Mo-4Zr, Consumable Electrode Melted
Solution Heat Treated and Cold Drawn
SAE AMS5687, Nickel Alloy, Corrosion- and Heat-Resistant, Wire 74Ni-15,5Cr-8,0Fe Annealed
SAE AMS5690, Steel, Corrosion and Heat Resistant, Wire, 17Cr-12N-2.5Mo (316), Solution Heat Treated
SAE AMS5737, Steel, Corrosion and Heat Resistant, Bars, Wire, Forgings, Mechanical Tubing, and Stock
for Forging and Heading 15Cr-25,5Ni-1,2Mo-2,1Ti-0,006B-0,30V (A286) Consumable Electrode Remelted,
1650 °F (899 °C) Solution and Precipitation Heat Treated
SAE AS5272, Lubricant, Solid Film; Heat Cured, Corrosion Inhibiting Procurement Specification
SAE AS87132, Lubricant, Cetyl Alcohol, 1-Hexadecanol, Application to Fasteners

Published by American Society for Testing and Materials (ASTM International), available at:
https://www.astm.org/.
Published by Department of Defense (DoD), available at: https://assist.dla.mil/.
Published by Aerospace Industries Association (AIA), available at: https://www.aia-aerospace.org/.
Published by Society of Automotive Engineers (SAE), available at: https://www.sae.org/.
oSIST prEN 6122:2024
prEN 6122:2024 (E)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
4 Requirements
4.1 Configuration, dimensions, tolerances, static strength, preload and spindle retention
The configuration, dimensions, tolerances, static strength, tensile preload and spindle retention shall
conform to Figure 1, Figure 2, Table 1 and Table 2.
4.2 Grip range and mass
Grip range and mass shall be according to Table 3 and Table 4.
4.3 Material, finish and lubrication
Material, finish and lubrication shall be according to Table 5 and Table 6.
4.4 First oversize
First oversize “X” shall be in CRES and according to Table 7, Table 8, Table 9 and Table 10.
oSIST prEN 6122:2024
prEN 6122:2024 (E)
a) Bolt configuration
b) Serrated pin geometry
oSIST prEN 6122:2024
prEN 6122:2024 (E)
Key
1 marking, see Clause 6
2 serrated pin
3 locking collar
4 0,005 Ref. crown height
5 grip
6 sleeve
7 shifting anvil
8 drive washer
Diameter of pin head shall not exceed “⌀D” max
Fasteners are supplied with shifting anvil/drive washer of manufacturer’s option. The shifting
anvil/drive washer is not part of the installed fastener.
Optional configuration.
Figure 1 — Configuration, dimensions

Key
1 grip
Blind side head may be installed on 7° max. slope.
Figure 2 — Typical installation
oSIST prEN 6122:2024
prEN 6122:2024 (E)
Table 1 — Dimensions and tolerances, CRES and titanium
Dimensions in mm (inch)
Diameter code
05 06 07 08 09 10
Theor.
8,43 9,80 10,57 12,88 13,66 16,13
⌀A
(0,332) (0,386) (0,416) (0,507) (0,538) (0,635)
Ref.
⌀A2 min. 7,52 8,81 9,47 11,76 12,55 14,66
(0,296) (0,347) (0,373) (0,463) (0,494) (0,577)
0,99 1,09 1,09 1,45 1,45 1,91
B Ref.
(0,039) (0,043) (0,043) (0,057) (0,057) (0,075)
0,478 0,488 0,627 0,602 0,754 0,704
0,376 0,386 0,561 0,500 0,696 0,638
H Gage HT
(0,018 8) (0,019 2) (0,024 7) (0,023 7) (0,029 7) (0,027 7)
(0,014 8) (0,015 2) (0,022 1) (0,019 7) (0,027 4) (0,025 1)
7,193 8,311 8,420 10,973
10,973 13,688
7,188 8,306 8,415 10,968 10,968 13,678
⌀W Gage dia.
(0,283 2) (0,327 2) (0,331 5) (0,432 0) (0,432 0) (0,538 9)
(0,283 0) (0,327 0) (0,331 3) (0,431 8) (0,431 8) (0,538 5)
±0,03 4,14 5,03 5,74 6,58 7,31 7,88
⌀D
(±0,001) (0,163) (0,198) (0,226) (0,259) (0,288) (0,310)
±0,13 9,53 9,53 9,53 9,53 9,53 11,13
a
⌀J
(±0,005) (0,375) (0,375) (0,375) (0,375) (0,375) (0,438)
±1,52 3,56 4,06 4,45 4,83 5,33 6,09
N
(±0,060) (0,140) (0,160) (0,175) (0,190) (0,210) (0,240)
3,05 3,81 4,14 4,83 5,23 5,61
⌀D max.
(0,120) (0,150) (0,163) (0,190) (0,206) (0,221)
2,16 2,79 3,17 3,66 4,06 4,82
⌀D max.
(0,085) (0,110) (0,125) (0,144) (0,160) (0,190)
7,62 8,13 8,89 9,40 10,92 12,70
b
P max.
(0,300) (0,320) (0,350) (0,370) (0,430) (0,475)
5,66 6,86 7,82 9,02 9,96 10,41
⌀P min.
(0,223) (0,270) (0,308) (0,355) (0,392) (0,410)
0,64 0,64 0,76 0,76 0,76 1,01
R max
(0,025) (0,025) (0,030) (0,030) (0,030) (0,040)
5,89 7,42 8,17 9,17 10,16 11,22
S max.
(0,232) (0,292) (0,322) (0,361) (0,400) (0,442)
±0,76 20,32 21,08 22,60 24,77 26,67 26,67
J
(±0,030) (0,800) (0,830) (0,890) (0,975) (10,050) (10,050)
oSIST prEN 6122:2024
prEN 6122:2024 (E)
Diameter code
05 06 07 08 09 10
Number
of
J 18 19 20 20 20 20
serrations
min.
±0,76 1,52 1,78 2,28 2,29 2,29 2,29
X
(±0,030) (0,060) (0,070) (0,090) (0,090) (0,090) (0,090)
0,13 0,13 0,13 0,13 0,13 0,13
E min.
(0,005) (0,005) (0,005) (0,005) (0,005) (0,005)
0,33 0,33 0,33 0,33 0,33 0,33
C Ref.
(0,013) (0,013) (0,013) (0,013) (0,013) (0,013)
±0,05 0,81 0,81 0,79 0,81 0,79 0,79
C
(±0,002) (0,032) (0,032) (0,031) (0,032) (0,031) (0,031)
F ±5° 45° 45° 45° 45° 45° 45°
G ±5° 30° 30° 30° 30° 30° 30°
a
Diameter code 05 is also available with reduced diameter shifting anvil/drive washer
[(7,93 ± 0,13) mm/(0,312 ± 0,005) inch]. See part number examples.
b
In the length of P, ⌀D may be 0,05 mm (0,002 inch) undersize.
Table 2 — Static strength (installed), tensile preload, spindle retention
Strength in kN (lbf)
Diameter Single shear Tensile strength Tensile preload Spindle retention
code strength
min. min. min. min.
CRES Ti CRES Ti CRES Ti CRES Ti
8,807 8,807 4,671 3,603 0,467 0,544 2,335 1,824
(1 980) (1 980) (1 050) (810) (105) (121) (525) (410)
13,011 13,011 6,672 5,605 0,667 0,841 3,336 2,804
(2 925) (2 925) (1 500) (1 260) (150) (189) (750) (630)
17,036 8,851 0,885 4,337
07 — — — —
(3 830) (1 990) (199) (975)
22,241 22,241 11,565 8,407 1,157 1,263 5,783 4,204
(5 000) (5 000) (2 600) (1 890) (260) (284) (1300) (945)
27,623 14,345 1,436 7,117
09 — — — —
(6 210) (3 225) (323) (1 600)
32,027 16,680 1,668 8,340
10 — — — —
(7 200) (3 750) (375) (1 875)
oSIST prEN 6122:2024
prEN 6122:2024 (E)
Table 3 — Grip range
Dimensions in mm (inch)
Diameter code
05 06 07 08 09 10
Grip Underlap Grip Range Overlap L K L K L K L K L K L K
length
min. min. min. max. max. Ref. max. Ref. max. Ref. max. Ref. max. Ref. max. Ref. max.
code
only 05 06 dia. to  05 dia. to
dia. 10 dia. 10 dia.
a
2,39 3,99 4,39 8,53 12,09 9,02 13,23
02 — — — — — — — — — —
(0,094) (0,157) (0,173) (0,336) (0,476) (0,355) (0,521)
b
3,71 3,56 3,96 5,59 5,99 10,11 13,69 10,59 14,81 12,29 16,38 12,17 16,38 13,67 18,39
03 — —
(0,146) (0,140) (0,156) (0,220) (0,236) (0,398) (0,539) (0,417) (0,583) (0,484) (0,645) (0,479) (0,645) (0,538) (0,724)
5,31 5,16 5,56 7,16 7,57 11,68 15,29 12,19 16,41 13,49 17,58 13,74 17,96 14,86 19,58 15,44 20,45
(0,585)
(0,209) (0,203) (0,219) (0,282) (0,298) (0,460) (0,602) (0,480) (0,646) (0,531) (0,692) (0,541) (0,707) (0,771) (0,608) (0,805)
6,88 6,73 7,14 8,76 9,17 13,28 16,87 13,77 17,98 15,06 19,15 15,34 19,56 16,43 21,16 17,04 22,05
(0,271) (0,265) (0,281) (0,345) (0,361) (0,523) (0,664) (0,542) (0,708) (0,593) (0,754) (0,604) (0,770) (0,647) (0,833) (0,671) (0,868)
8,48 8,33 8,74 10,34 10,74 14,86 18,47 15,37 19,58 16,66 20,75 16,92 21,13 18,03 22,76 18,62 23,62
(0,334) (0,328) (0,344) (0,407) (0,423) (0,585) (0,727) (0,605) (0,771) (0,656) (0,817) (0,666) (0,832) (0,710) (0,896) (0,733) (0,930)
10,06 9,91 10,31 11,94 12,34 16,46 20,04 16,94 21,16 18,24 22,33 18,52 22,73 19,61 24,33 20,22 25,22
(0,396) (0,390) (0,406) (0,470) (0,486) (0,648) (0,789) (0,667) (0,833) (0,781) (0,879) (0,729) (0,895) (0,772) (0,958) (0,796) (0,993)
11,66 11,51 11,91 13,51 13,92 18,03 21,64 18,54 22,76 19,84 23,93 20,09 24,31 21,21 25,93 21,79 26,80
(0,459) (0,453) (0,469) (0,532) (0,548) (0,710) (0,852) (0,730) (0,896) (0,781) (0,942) (0,791) (0,957) (0,835) (1,021) (0,858) (1,055)
13,23 13,08 13,49 15,11 15,52 19,63 23,22 20,12 24,33 21,41 25,50 21,69 25,91 22,78 27,51 23,39 28,40
(0,521) (0,515) (0,531) (0,595) (0,611) (0,773) (0,914) (0,792) (0,958) (0,843) (1,004) (0,854) (1,020) (0,897) (1,083) (0,921) (1,118)
14,83 14,68 15,09 16,69 17,09 21,21 24,82 21,72 25,93 23,01 27,10 23,27 27,48 24,38 29,11 24,97 29,97
(0,584) (0,578) (0,594) (0,657) (0,673) (0,835) (0,977) (0,855) (1,021) (0,906) (1,067) (0,916) (1,082) (0,960) (1,146) (0,983) (1,180)
16,41 16,26 16,66 18,29 18,69 22,81 26,39 23,29 27,51 24,59 28,68 24,87 29,08 25,96 30,68 26,57 31,57
(1,022)
(0,646) (0,640) (0,656) (0,720) (0,736) (0,898) (1,039) (0,917) (1,083) (0,968) (1,129) (0,979) (1,145) (1,208) (1,046) (1,243)
oSIST prEN 6122:2024
prEN 6122:2024 (E)
Diameter code
05 06 07 08 09 10
Grip Underlap Grip Range Overlap L K L K L K L K L K L K
length
min. min. min. max. max. Ref. max. Ref. max. Ref. max. Ref. max. Ref. max. Ref. max.
code
only 05 06 dia. to  05 dia. to
dia. 10 dia. 10 dia.
18,01 17,86 18,26 19,86 20,27 24,38 27,99 24,89 29,11 26,19 30,28 26,44 30,658 27,56 32,28 28,14 33,15
(0,709) (0,703) (0,719) (0,782) (0,798) (0,960) (1,102) (0,980) (1,146) (1,031) (1,192) (1,041) (1,207) (1,085) (1,271) (1,108) (1,305)
19,58 19,43 19,84 21,46 21,87 25,98 29,57 26,47 30,68 27,76 31,85 28,04 32,26 29,13 33,86 29,74 34,75
(0,771) (0,765) (0,781) (0,845) (0,861) (1,023) (1,164) (1,042) (1,208) (1,093) (1,254) (1,104) (1,270) (1,147) (1,333) (1,171) (1,368)
21,18 21,03 21,44 23,04 23,44 27,56 31,17 28,07 32,28 29,36 33,45 29,62 33,83 30,73 35,46 31,32 36,32
(0,834) (0,828) (0,844) (0,907) (0,923) (1,085) (1,227) (1,105) (1,271) (1,156) (1,317) (1,166) (1,332) (1,210) (1,396) (1,233) (1,430)
22,76 22,61 23,01 24,64 25,04 29,16 32,74 29,64 33,86 30,94 35,03 31,22 35,43 32,31 37,03 32,92 37,92
(0,896) (0,890) (0,906) (0,970) (0,986) (1,148) (1,289) (1,167) (1,333) (1,218) (1,379) (1,229) (1,39
...