ASTM E784-89(2022)
(Specification)Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
ABSTRACT
This specification covers clamps and clamp holders for use in securing laboratory apparatus to support stands. The clamp and clamp holders are classified into types, sizes and classes and are presented in details. Clamps and clamp holders shall be manufactured from aluminum-base alloy, zinc-base alloy, or cast iron. Fittings such as screws, nuts, and rivets for clamps and clamp holders shall be forged aluminum or chemical-resistant alloy for either aluminum-base alloy or zinc-base alloy clamps and clamp holders. Component springs of clamps shall be phosphor bronze or corrosion-resistant steel. Component sleeves of clamps may be rubber, plastic, fiber glass, non-hazardous minerals, or replaceable plastic.
SCOPE
1.1 This specification covers clamps and clamp holders for use in securing laboratory apparatus to support stands.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:E784 −89(Reapproved 2022)
Standard Specification for
Clamps, Utility, Laboratory, and Holders, Buret and Clamp
This standard is issued under the fixed designation E784; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope PPP-B-676 Boxes, Setup
PPP-F-320 Fiberboard, Corrugated and Solid, Sheet Stock
1.1 This specification covers clamps and clamp holders for
(Container Grade) and Cut Shapes
use in securing laboratory apparatus to support stands.
2.3 Federal Standard:
1.2 The values stated in SI units are to be regarded as the
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
standard. The values given in parentheses are for information
only. 2.4 Military Specifications:
MIL-P-116 Methods of Preservation-Packaging
1.3 This international standard was developed in accor-
MIL-STD-1188 Commercial Packaging of Supplies and
dance with internationally recognized principles on standard-
Equipment
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
2.5 Military Standard:
mendations issued by the World Trade Organization Technical
MIL-STD-105 Sampling Procedures and Tables for Inspec-
Barriers to Trade (TBT) Committee.
tion by Attributes
2. Referenced Documents
3. Classification
2.1 ASTM Standards:
3.1 Types, Sizes, and Classes—The clamp and clamp hold-
A48/A48M Specification for Gray Iron Castings
ers covered by this specification shall be of the types, classes,
A276 Specification for Stainless Steel Bars and Shapes
and sizes as specified in 3.2 – 3.6 (see S3.1).
B30 Specification for Copper Alloys in Ingot and Other
3.2 Type I—Clamp holders:
Remelt Forms
3.2.1 Class 1—Fixed jaw.
B85 Specification for Aluminum-Alloy Die Castings
3.2.2 Class 2—Swivel jaw.
B86 Specification for Zinc and Zinc-Aluminum (ZA) Alloy
3.2.3 Class 3—All position jaw.
Foundry and Die Castings
B139/B139M Specification for Phosphor Bronze Rod, Bar, 3.3 Type II—Two-pronged clamps:
and Shapes
3.3.1 Class 1—Fixed, with holder.
B247 Specification forAluminum andAluminum-Alloy Die 3.3.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
Forgings, Hand Forgings, and Rolled Ring Forgings
3.3.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
2.2 Federal Specifications:
3.3.2 Class 2—Swivel with holder.
UU-P-553 Paper, Wrapping, Tissue 3.3.2.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
PPP-B-566 Boxes, Folding, Paper
3.3.2.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
PPP-B-601 Box, Wood, Cleated-Plywood 3.3.3 Class 3—Swivel, duplex.
PPP-B-621 Box, Wood, Nailed and Lock Corner
3.4 Type III—Extension clamps:
PPP-B-636 Box, Shipping, Fiberboard
3.4.1 Class 1—Two-pronged.
3.4.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
3.4.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
This specification is under the jurisdiction of ASTM Committee E41 on
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
3.4.2 Class 2—Three-pronged.
Laboratory Ware and Supplies.
3.4.2.1 Size 1—Small clamp expands to 25 mm (1 in.).
Current edition approved Sept. 1, 2022. Published September 2022. Originally
3.4.2.2 Size 2—Large clamp expands to 98 mm (3 ⁄8 in.).
approvedin1981.Lastpreviouseditionapprovedin2017asE784 – 89(2017).DOI:
10.1520/E0784-89R22. 3.4.3 Class 3—Universal.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.4.3.1 Size 1—Small clamp expands to 51 mm (2 in.).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.4.3.2 Size 2—Large clamp expands to 76 mm (3 in.).
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3.5 Type IV—Thermometer clamp, swivel with holder.
Available from Naval Publications and Forms Center, 5801 Tabor Ave.,
Philadelphia, PA 19120. 3.6 Type V—Clamp, double buret holder.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E784−89(2022)
TABLE 1 Dimensions and Tolerances for Clamps and Clamp Holders
Maximum diameter of opening,
Classification Type of Jaw
Overall length, Tolerance,
mm (in.)
mm (in.) ±mm (± in.)
Type Class Size Clamp Holder Clamp Holder
11 1
I 1 . . ⁄16 (17) 127 (5) 6 ( ⁄4 ) . V
11 1
I 2 . . ⁄16 152 (6) 6 ( ⁄4) . V
11 1
I 3 . . ⁄16 127 (5) 3 ( ⁄8) . V
1 11 1
II 1 1 38.1 (1 ⁄2 ) ⁄16 178 (7) 6 ( ⁄4 ) round V
1 11 1
II 1 2 63.5 (2 ⁄2 ) ⁄16 178 (7) 6 ( ⁄4 ) round V
1 11 1
II 2 1 38.1 (1 ⁄2 ) ⁄16 178 (7) 6 ( ⁄4 ) round V
1 11 1 1
II 2 2 63.5 (2 ⁄2 ) ⁄16 191 (7 ⁄2)6( ⁄4) round V
1 1
II 3 . 38.1 and 63.5 . 216 (8 ⁄2)6( ⁄4 ) round .
A
1 1
(1 ⁄2 and 2 ⁄2 )
1 1
III 1 1 38.1 (1 ⁄2 ) . 203 (8) 6 ( ⁄4) round .
1 1
III 1 2 63.5 (2 ⁄2 ) . 228 (9) 6 ( ⁄4) round .
III 2 1 25.4 (1) . 152 (6) 6 ( ⁄4 ) prong .
7 1 1
III 2 2 (3 ⁄8 ) . 267 (10 ⁄2)13( ⁄2 ) prong .
III 3 1 50.8 (2) . 203 (8) 6 ( ⁄4 ) prong .
1 1
III 3 2 76.2 (3) . 242 (9 ⁄2)6( ⁄4 ) prong .
1 1 11 1
IV . . 3 ( ⁄8)to13( ⁄2) ⁄16 152 (6) 6 ( ⁄4) clip V
B
11 1
V . . ⁄16 254 (10) 6 ( ⁄4) finger V
A
Clamp on each end, one small and one large sized.
B
Clamp shall be capable of holding micro to 100-mL size burets, 5 to 20 mm in diameter.
4. Materials 4.4.5 Replaceable Plastic—When replaceable plastic
sleeves are specified, they shall be durable enough not to break
4.1 Base Metal—Clamps and clamp holders shall be manu-
down in sand blasting, shot blasting, painting or coating
factured from aluminum-base alloy, zinc-base alloy, or cast
operations.Application should be quick and the resulting fit be
iron. Aluminum base alloy metal shall conform to alloy
snug and conforming.
number A380 of Specification B85. Zinc-base alloy shall
conform to AG 40A of Specification B86. Cast iron shall
5. Dimensions, Mass, and Permissible Variations
conform to Specification A48/A48M, Class 20.
5.1 Fitting Threads—Thumbscrews, wingnuts, and holders
4.2 Metal Fittings—Fittings such as screws, nuts, and rivets
shall be threaded in accordance with Screw Thread Standards
for clamps and clamp holders shall be forged aluminum or
for Federal Services, Unified National Coarse Thread Series.
chemical-resistant alloy for either aluminum-base alloy or
5.1.1 Metric threads can be used if specified.
zinc-base alloy clamps and clamp holders. In addition zinc-
5.2 Dimensions—The dimensions and tolerances shall be as
base alloy clamps and clamp holders may have copper alloy
shown in Table 1.
fittings. Forged aluminum fittings shall conform in composi-
tion to 2014 of Specification B247. Copper alloy fittings shall
5.3 Construction—The illustrations shown in Figs. 1-5 are
conform to composition to Specification B30.
for the convenience of identification and shall not preclude
clamps and clamp holders otherwise in accordance with this
4.3 Springs—Component springs of clamps shall be phos-
specification.
phor bronze or corrosion-resistant steel. Phosphor bronze shall
5.3.1 Type I—Class 1 clamp holders shall be of one-piece
conform to Composition C51000 of Specification B139/
construction, consisting of two V-grooved areas at right angles
B139M.Corrosion-resistantsteelshallconformtoClass202or
to each other. Class 2 clamp holders shall consist of two
302 of Specification A276.
separate V-grooved sections freely movable through an angle
4.4 Sleeves—Component sleeves of clamps may be rubber,
of 360° in parallel planes and position fixed by means of a set
plastic, fiber glass, non-hazardous minerals, or replaceable
screw. Class 3 clamp holders shall consist of two V-grooved
plastic. Unless otherwise specified by the procuring agency,
areas connected to each other by a double plate joint which
rubber sleeves shall be supplied with clamps (see S2.1).
keeps the V-grooved areas in planes permanently set at 90° to
4.4.1 Rubber—Rubber for sleeves shall conform to Type R,
each other. The plate joints have friction disks which allow
class optional of MIL-STD-147.
each V-grooved area full movement through an angle of 360°
4.4.2 Plastic—When plastic sleeves are specified, they shall
within each plane. The V-grooved areas of each class are fitted
be bonded firmly to the clamp jaw. The plastic sleeve shall be
with thumbscrews for attachment to support rods or anchoring
formed by hot dipping the clamp jaw in a vinyl plastisol
clamp shafts. All clamp holders shall be capable of direct
conforming to Type II of MIL-P-20689.
attachment to rods up to 13 mm ( ⁄2 in.) in diameter without the
4.4.3 Mineral—When mineral sleeves are specified, they
necessity of passing the clamp holders over the ends of the
shall be nonraveling and woven from high-quality mineral
yarn.
4.4.4 Fiber Glass—When fiber glass sleeves are specified,
NIST Handbook 100, National Bureau of Standards, is available from the
they shall be nonraveling and woven. National Technical Information Service, Port Royal Road, Springfield, VA 21161.
---------------------- P
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.