ASTM E784-89(2011)

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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2011
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaces: ASTM E784-89(2005) - Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
• Effective Date: 01-Oct-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E784 −89(Reapproved 2011)
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 MIL-STD-1188 Commercial Packaging of Supplies and
Equipment
1.1 This specification covers clamps and clamp holders for
2.5 Military Standard:
use in securing laboratory apparatus to support stands.
MIL-STD-105 Sampling Procedures and Tables for Inspec-
1.2 The values stated in SI units are to be regarded as the
tion by Attributes
standard. The values given in parentheses are for information
only.
3. Classification
3.1 Types, Sizes, and Classes—The clamp and clamp hold-
2. Referenced Documents
ers covered by this specification shall be of the types, classes,
2.1 ASTM Standards:
and sizes as specified in 3.2-3.6 (see S3.1).
A48/A48M Specification for Gray Iron Castings
3.2 Type I—Clamp holders:
A276 Specification for Stainless Steel Bars and Shapes
3.2.1 Class 1—Fixed jaw.
B30 Specification for Copper Alloys in Ingot Form
3.2.2 Class 2—Swivel jaw.
B85 Specification for Aluminum-Alloy Die Castings
3.2.3 Class 3—All position jaw.
B86 Specification for Zinc and Zinc-Aluminum (ZA) Alloy
Foundry and Die Castings
3.3 Type II—Two-pronged clamps:
B139/B139M Specification for Phosphor Bronze Rod, Bar,
3.3.1 Class 1—Fixed, with holder.
and Shapes 1
3.3.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
B247 Specification forAluminum andAluminum-Alloy Die 1
3.3.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
Forgings, Hand Forgings, and Rolled Ring Forgings
3.3.2 Class 2—Swivel with holder.
2.2 Federal Specifications:
3.3.2.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
UU-P-553 Paper, Wrapping, Tissue
3.3.2.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
PPP-B-566 Boxes, Folding, Paper
3.3.3 Class 3—Swivel, duplex.
PPP-B-601 Box, Wood, Cleated-Plywood
3.4 Type III—Extension clamps:
PPP-B-621 Box, Wood, Nailed and Lock Corner
3.4.1 Class 1—Two-pronged.
PPP-B-636 Box, Shipping, Fiberboard
3.4.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
PPP-B-676 Boxes, Setup
3.4.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
PPP-F-320 Fiberboard, Corrugated and Solid, Sheet Stock
3.4.2 Class 2—Three-pronged.
(Container Grade) and Cut Shapes
3.4.2.1 Size 1—Small clamp expands to 25 mm (1 in.).
2.3 Federal Standard:
3.4.2.2 Size 2—Large clamp expands to 98 mm (3 ⁄8 in.).
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3.4.3 Class 3—Universal.
2.4 Military Specifications:
3.4.3.1 Size 1—Small clamp expands to 51 mm (2 in.).
MIL-P-116 Methods of Preservation-Packaging
3.4.3.2 Size 2—Large clamp expands to 76 mm (3 in.).
3.5 Type IV—Thermometer clamp, swivel with holder.
This specification is under the jurisdiction of ASTM Committee E41 on
3.6 Type V—Clamp, double buret holder.
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Apparatus.
4. Materials
Current edition approved Oct. 1, 2011. Published November 2011. Originally
´1
approved in 1981. Last previous edition approved in 2005 as E784 – 89 (2005) .
4.1 Base Metal—Clamps and clamp holders shall be manu-
DOI: 10.1520/E0784-89R11.
factured from aluminum-base alloy, zinc-base alloy, or cast
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
iron. Aluminum base alloy metal shall conform to alloy
Standards volume information, refer to the standard’s Document Summary page on
number A380 of Specification B85. Zinc-base alloy shall
the ASTM website.
conform to AG 40A of Specification B86. Cast iron shall
Available from Naval Publications and Forms Center, 5801 Tabor Ave.,
Philadelphia, PA 19120. conform to Specification A48/A48M, Class 20.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E784−89(2011)
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.
4.2 Metal Fittings—Fittings such as screws, nuts, and rivets 5. Dimensions, Mass, and Permissible Variations
for clamps and clamp holders shall be forged aluminum or
5.1 Fitting Threads—Thumbscrews, wingnuts, and holders
chemical-resistant alloy for either aluminum-base alloy or
shall be threaded in accordance with Screw Thread Standards
zinc-base alloy clamps and clamp holders. In addition zinc-
for Federal Services, Unified National Coarse Thread Series.
base alloy clamps and clamp holders may have copper alloy
5.1.1 Metric threads can be used if specified.
fittings. Forged aluminum fittings shall conform in composi-
5.2 Dimensions—The dimensions and tolerances shall be as
tion to 2014 of Specification B247. Copper alloy fittings shall
shown in Table 1.
conform to composition to Specification B30.
5.3 Construction—The illustrations shown in Figs. 1-5 are
4.3 Springs—Component springs of clamps shall be phos-
for the convenience of identification and shall not preclude
phor bronze or corrosion-resistant steel. Phosphor bronze shall
clamps and clamp holders otherwise in accordance with this
conform to Composition C51000 of Specification B139/
specification.
B139M.Corrosion-resistantsteelshallconformtoClass202or
5.3.1 Type I—Class 1 clamp holders shall be of one-piece
302 of Specification A276.
construction, consisting of two V-grooved areas at right angles
to each other. Class 2 clamp holders shall consist of two
4.4 Sleeves—Component sleeves of clamps may be rubber,
separate V-grooved sections freely movable through an angle
plastic, fiber glass, non-hazardous minerals, or replaceable
of 360° in parallel planes and position fixed by means of a set
plastic. Unless otherwise specified by the procuring agency,
screw. Class 3 clamp holders shall consist of two V-grooved
rubber sleeves shall be supplied with clamps (see S2.1).
areas connected to each other by a double plate joint which
4.4.1 Rubber—Rubber for sleeves shall conform to Type R,
keeps the V-grooved areas in planes permanently set at 90° to
class optional of MIL-STD-147.
each other. The plate joints have friction disks which allow
4.4.2 Plastic—When plastic sleeves are specified, they shall
each V-grooved area full movement through an angle of 360°
be bonded firmly to the clamp jaw. The plastic sleeve shall be
within each plane. The V-grooved areas of each class are fitted
formed by hot dipping the clamp jaw in a vinyl plastisol
with thumbscrews for attachment to support rods or anchoring
conforming to Type II of MIL-P-20689.
clamp shafts. All clamp holders shall be capable of direct
4.4.3 Mineral—When mineral sleeves are specified, they attachment to rods up to 13 mm ( ⁄2 in.) in diameter without the
necessity of passing the clamp holders over the ends of the
shall be nonraveling and woven from high-quality mineral
yarn. rods. All clamp holders shall be capable of attachment to rods
up to 17 mm ( ⁄16 in.) in diameter by passing the clamp holder
4.4.4 Fiber Glass—When fiber glass sleeves are specified,
over the ends of the rods.
they shall be nonraveling and woven.
5.3.2 Type II—Class 1 and Class 2 two-pronged clamps
4.4.5 Replaceable Plastic—When replaceable plastic
shall consist of aV-grooved holder fitted with thumbscrews for
sleeves are specified, they shall be durable enough not to break
down in sand blasting, shot blasting, painting or coating
operations.Application should be quick and the resulting fit be 4
NIST Handbook 100, National Bureau of Standards, is available from the
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