ASTM E784-89(2005)

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-2005
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaces: ASTM E784-89(2000)e1 - Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
• Effective Date: 01-Oct-2005
• Replaced By: ASTM E784-89(2011) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2005)
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 2.4 Military Specifications:
MIL-P-116 Methods of Preservation-Packaging
1.1 This specification covers clamps and clamp holders for
MIL-STD-1188 Commercial Packaging of Supplies and
use in securing laboratory apparatus to support stands.
Equipment
1.2 The values stated in SI units are to be regarded as the
2.5 Military Standard:
standard. The values given in parentheses are for information
MIL-STD-105 Sampling Procedures and Tables for Inspec-
only.
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 Form
3.2 Type I—Clamp holders:
B85 Specification for Aluminum-Alloy Die Castings
3.2.1 Class 1—Fixed jaw.
B86 Specification for Zinc and Zinc-Aluminum (ZA)Alloy
3.2.2 Class 2—Swivel jaw.
Foundry and Die Castings
3.2.3 Class 3—All position jaw.
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 for Aluminum and Aluminum-Alloy
3.3.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
Die 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.
PPP-B-676 Boxes, Setup
3.4.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
PPP-F-320 Fiberboard, Corrugated and Solid, Sheet Stock
3.4.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
(Container Grade) and Cut Shapes
3.4.2 Class 2—Three-pronged.
2.3 Federal Standard:
3.4.2.1 Size 1—Small clamp expands to 25 mm (1 in.).
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3.4.2.2 Size 2—Large clamp expands to 98 mm (3 ⁄8 in.).
3.4.3 Class 3—Universal.
This specification is under the jurisdiction of ASTM Committee E41 on
3.4.3.1 Size 1—Small clamp expands to 51 mm (2 in.).
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
3.4.3.2 Size 2—Large clamp expands to 76 mm (3 in.).
Apparatus.
3.5 Type IV—Thermometer clamp, swivel with holder.
Current edition approved Oct. 1, 2005. Published December 2005. Originally
´1
approved in 1981. Last previous edition approved in 2000 as E784 – 89 (2000) .
3.6 Type V—Clamp, double buret holder.
DOI: 10.1520/E0784-89R05.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4. Materials
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.1 Base Metal—Clamps and clamp holders shall be manu-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
factured from aluminum-base alloy, zinc-base alloy, or cast
Available from Naval Publications and Forms Center, 5801 Tabor Ave.,
iron. Aluminum base alloy metal shall conform to alloy
Philadelphia, PA 19120.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E784 – 89 (2005)
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.) 6mm (6 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.
number A380 of Specification B85. Zinc-base alloy shall 5. Dimensions, Mass, and Permissible Variations
conform to AG 40A of Specification B86. Cast iron shall
5.1 Fitting Threads—Thumbscrews, wingnuts, and holders
conform to Specification A48/A48M, Class 20.
shall be threaded in accordance with Screw Thread Standards
4.2 Metal Fittings—Fittings such as screws, nuts, and rivets
for Federal Services, Unified National Coarse Thread Series.
for clamps and clamp holders shall be forged aluminum or
5.1.1 Metric threads can be used if specified.
chemical-resistant alloy for either aluminum-base alloy or
5.2 Dimensions—The dimensions and tolerances shall be as
zinc-base alloy clamps and clamp holders. In addition zinc-
shown in Table 1.
base alloy clamps and clamp holders may have copper alloy
5.3 Construction—The illustrations shown in Figs. 1-5 are
fittings. Forged aluminum fittings shall conform in composi-
for the convenience of identification and shall not preclude
tion to 2014 of Specification B247. Copper alloy fittings shall
clamps and clamp holders otherwise in accordance with this
conform to composition to Specification B30.
specification.
4.3 Springs—Component springs of clamps shall be phos- 5.3.1 Type I—Class 1 clamp holders shall be of one-piece
construction, consisting of two V-grooved areas at right angles
phor bronze or corrosion-resistant steel. Phosphor bronze shall
conform to Composition C51000 of Specification B139/ to each other. Class 2 clamp holders shall consist of two
separate V-grooved sections freely movable through an angle
B139M.Corrosion-resistantsteelshallconformtoClass202or
302 of Specification A276. of 360° in parallel planes and position fixed by means of a set
screw. Class 3 clamp holders shall consist of two V-grooved
4.4 Sleeves—Component sleeves of clamps may be rubber,
areas connected to each other by a double plate joint which
plastic, fiber glass, non-hazardous minerals, or replaceable
keeps the V-grooved areas in planes permanently set at 90° to
plastic. Unless otherwise specified by the procuring agency,
each other. The plate joints have friction disks which allow
rubber sleeves shall be supplied with clamps (see S2.1).
each V-grooved area full movement through an angle of 360°
4.4.1 Rubber—Rubber for sleeves shall conform to Type R,
within each plane. The V-grooved areas of each class are fitted
class optional of MIL-STD-147.
with thumbscrews for attachment to support rods or anchoring
4.4.2 Plastic—When plastic sleeves are specified, they shall
clamp shafts. All clamp holders shall be capable of direct
be bonded firmly to the clamp jaw. The plastic sleeve shall be
attachment to rods up to 13 mm ( ⁄2 in.) in diameter without the
formed by hot dipping the clamp jaw in a vinyl plastisol
necessity of passing the clamp holders over the ends of the
conforming to Type II of MIL-P-20689.
rods. All clamp holders shall be capable of attachment to rods
4.4.3 Mineral—When mineral sleeves are specified, they
up to 17 mm ( ⁄16 in.) in diameter by passing the clamp holder
shall be nonraveling and woven from high-quality mineral
over the ends of the rods.
yarn.
5.3.2 Type II—Class 1 and Class 2 two-pronged clamps
4.4.4 Fiber Glass—When fiber glass sleeves are specified,
shall consist of aV-grooved holder fitted with thumbscrews for
they shall be nonraveling and woven.
attachment to support rods and a spring type clamp. The clamp
4.4.5 Replaceable Plastic—When replaceable plastic
shall have two jaws that spread under spring tension and shall
sleeves are specified, they shall be durable enough not to break
down in sand blasting, shot blasting, painting or coating
operations.Application should be qui
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