NSN 7791663

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

125.0 microinches bearing surface finish, chamfered bearing surface type, steel comp 8640 overall material, 30.0 rockwell c minimum and 36.0 rockwell c maximum hardness rating, 90.0 degrees nominal nut countersink angle.

NSN 5310-00-953-6340 Datasheet

(NSN) National Stock Number

5310-00-953-6340

(FSG) Federal Supply Group

53 - Hardware and Abrasives

(FSC) Federal Supply Classification

5310 - Nuts and Washers

(NIIN) National Item Identification Number

00-953-6340

Requires Demilitarization

Yes

(INC) Item Name Code

01857

Date

Fri, May 20, 1966

Bearing Surface Finish

125.0 microinches

Bearing Surface Type

chamfered

Countersink Angle

90.0 degrees nominal nut

Hardness Rating

30.0 rockwell c minimum and 36.0 rockwell c maximum

Material

steel comp 8640 overall

Nominal Thread Size

0.250 inches

Nut Height

0.260 inches minimum and 0.270 inches maximum

Nut Style

hexagon

Surface Treatment

phosphate overall

Thread Class

3b

Thread Direction

right-hand

Thread Quantity Per Inch

28

Thread Series

unf

Width Across Flats

0.365 inches minimum and 0.375 inches maximum

Identification

Demilitarization Code

A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Precious Metals Indicator

A - Item does not contain precious metal.

Hazardous Metals Indicator

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0001857

Cross Reference

CAGE Codes

19204

Army, United States Department of the Dba Rock Island Arsenal Jmtc

Non-manufacturers

Freight Information

Air Commodity

BZ -

Air Dimension

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

National Motor Freight Class Rating

W - Rating variable

Special Handling

9 - Other or no special handling required (sh)

Type of Cargo

Z - No special type of cargo code applicable

Uniform Freight Classification Item Number

48950

Water Commodity

573 - Bolts or nuts (iron or steel),(less than 35 feet)

National Motor Freight Classification Item Number

093486

Questions & Answers

1. What is the FSCG of the NSN 5310-00-953-6340?

   The FSCG of the NSN 5310-00-953-6340 is 5310

2. Does NSN 5310-00-953-6340 require demilitarization?

   Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

3. Does NSN 5310-00-953-6340 contain precious materials?

   Item does not contain precious metal.

4. Does NSN 5310-00-953-6340 contain hazardous materials?

   Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

5. When the NSN 5310-00-953-6340 was assigned to the Federal Catalog?

   It was assigned 60 years ago, on Fri, May 20, 1966