ASTM E784-89(2000)e1

Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp

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: 31-Dec-1999
• 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(1996) - Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
• Effective Date: 01-Jan-2000
• Replaced By: ASTM E784-89(2005) - Standard Specification for Clamps, Utility, Laboratory, and Holders, Buret and Clamp
• Effective Date: 01-Oct-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
e1
Designation: E 784 – 89 (Reapproved 2000)
Standard Specification for
Clamps, Utility, Laboratory, and Holders, Buret and Clamp
This standard is issued under the fixed designation E 784; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Keywords were added editorially in March 2001.
1. Scope MIL-P-116 Methods of Preservation-Packaging
MIL-STD-1188 Commercial Packaging of Supplies and
1.1 This specification covers clamps and clamp holders for
Equipment
use in securing laboratory apparatus to support stands.
2.5 Military Standard:
1.2 The values stated in SI units are to be regarded as the
MIL-STD-105 Sampling Procedures and Tables for Inspec-
standard. The values given in parentheses are for information
tion by Attributes
only.
3. Classification
2. Referenced Documents
3.1 Types, Sizes, and Classes—The clamp and clamp hold-
2.1 ASTM Standards:
ers covered by this specification shall be of the types, classes,
A 48 Specification for Gray Iron Castings
and sizes as specified in 3.2-3.6 (see S3.1).
A 276 Specification for Stainless and Heat Resisting Steel
3.2 Type I—Clamp holders:
Bars and Shapes
3.2.1 Class 1—Fixed jaw.
B 30 Specification for Copper-Base Alloys in Ingot Form
3.2.2 Class 2—Swivel jaw.
B 85 Specification for Aluminum-Alloy Die Castings
3.2.3 Class 3—All position jaw.
B 86 Specification for Zinc-Alloy Die Castings
3.3 Type II—Two-pronged clamps:
B 139 Specification for Phosphor Bronze Rod, Bar, and
3.3.1 Class 1—Fixed, with holder.
Shapes
3.3.1.1 Size 1—Small clamp expands to 38 mm (1 ⁄2 in.).
B 247 Specification for Aluminum and Aluminum-Alloy
3.3.1.2 Size 2—Large clamp expands to 64 mm (2 ⁄2 in.).
Die Forgings, Hand Forgings, and Rolled Ring Forgings
6 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.).
3.4.3.2 Size 2—Large clamp expands to 76 mm (3 in.).
This specification is under the jurisdiction of ASTM Committee E41 on 3.5 Type IV—Thermometer clamp, swivel with holder.
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
3.6 Type V—Clamp, double buret holder.
Apparatus.
Current edition approved Feb. 24, 1989. Published April 1989. Originally
4. Materials
published as E 784 – 81. Last previous edition E 784 – 82.
Annual Book of ASTM Standards, Vol 01.02.
4.1 Base Metal—Clamps and clamp holders shall be manu-
Annual Book of ASTM Standards, Vol 01.05.
factured from aluminum-base alloy, zinc-base alloy, or cast
Annual Book of ASTM Standards, Vol 02.01.
iron. Aluminum base alloy metal shall conform to alloy
Annual Book of ASTM Standards, Vol 02.02.
number A380 of Specification B 85. Zinc-base alloy shall
Available from Naval Publications and Forms Center, 5801 Tabor Ave.,
Philadelphia, Pa. 19120.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E 784
conform to AG 40A of Specification B 86. Cast iron shall 5. Dimensions, Mass, and Permissible Variations
conform to Specification A 48, 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-
5.3 Construction—The illustrations shown in Figs. 1-5 are
tion to 2014 of Specification B 247. Copper alloy fittings shall
for the convenience of identification and shall not preclude
conform to composition to Specification B 30.
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.
4.3 Springs—Component springs of clamps shall be phos- clamps and clamp holders otherwise in accordance with this
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 B 139.
construction, consisting of 2 V-grooved areas at right angles to
Corrosion-resistant steel shall conform to Class 202 or 302 of
each other. Class 2 clamp holders shall consist of 2 separate
Specification A 276.
V-grooved sections freely movable through an angle of 360° in
4.4 Sleeves—Component sleeves of clamps may be rubber,
parallel planes and position fixed by means of a set screw.
plastic, fiber glass, non-hazardous minerals, or replaceable
Class 3 clamp holders shall consist of 2 V-grooved areas
plastic. Unless otherwise specified by the procuring agency,
connected to each other by a double plate joint which keeps the
rubber sleeves shall be supplied with clamps (see S2.1).
V-grooved areas in planes permanently set at 90° to each other.
4.4.1 Rubber—Rubber for sleeves shall conform to Type R,
The plate joints have friction disks which allow each
class optional of MIL-STD-147.
V-grooved area full movement through an angle of 360° within
4.4.2 Plastic—When plastic sleeves are specified, they shall each plane. The V-grooved areas of each class are fitted with
be bonded firmly to the clamp jaw. The plastic sleeve shall be thumbscrews for attachment to support rods or anchoring
clamp shafts. All clamp holders shall be capable of direct
formed by hot dipping the clamp jaw in a vinyl plastisol
attachment to rods up to 13 mm ( ⁄2 in.) in diameter without the
conforming to Type II of MIL-P-20689.
necessity of passing the clamp holders over the ends of the
4.4.3 Mineral—When mineral sleeves are specified, they
rods. All clamp holders shall be capable of attachment to rods
shall be nonraveling and woven from high-quality mineral
up to 17 mm ( ⁄16 in.) in diameter by passing the clamp holder
yarn.
over the ends of the rods.
4.4.4 Fiber Glass—When fiber glass sleeves are specified,
5.3.2 Type II—Class 1 and Class 2 two-pronged clamps
they shall be nonraveling and woven.
shall consist of aV-grooved holder fitted with thumbscrews for
4.4.5 Replaceable Plastic—When replaceable plastic
attachment to support rods and a spring type clamp. The clamp
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 7
NIST Handbook 100, National Bureau
...