Nuts and Washers from Greece (GR)

Question 1

What is Federal Supply Class 5310?

Accepted Answer

FSC 5310 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5310) in the USA for supply items codified in the category of Nuts and Washers.

Question 2

What is NATO Supply Classification Class 5310?

Accepted Answer

NSC 5310 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5310 in the USA) for supply items codified in the category of Nuts and Washers.

Question 3

Which Federal Supply Group is FSC 5310 in?

Accepted Answer

FSC 5310 is in Federal Supply Group (FSG) 53 which contains Hardware and Abrasives.

Question 4

Which NATO Supply Classification Group is NSC 5310 in?

Accepted Answer

NSC 5310is in NATO Supply Classification Group (NSG) 53 which contains Hardware and Abrasives.

Question 5

What is a Hexagon Castellated Plain Nut?

Accepted Answer

A Hexagon Castellated Plain Nut (NUT,PLAIN,CASTELLATED,HEXAGON) is a nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes NUT (1), PLAIN, SLOTTED, HEXAGON.

Question 6

What is a Hexagon Plain Nut?

Accepted Answer

A Hexagon Plain Nut (NUT,PLAIN,HEXAGON) is a nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Question 7

What is a Hexagon Self-Locking Nut?

Accepted Answer

A Hexagon Self-Locking Nut (NUT,SELF-LOCKING,HEXAGON) is a nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes NUT (1), SELF-LOCKING, CAP.

Question 8

What is a Flat Washer?

Accepted Answer

A Flat Washer (WASHER,FLAT) is a washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Question 9

What is a Lock Washer?

Accepted Answer

A Lock Washer (WASHER,LOCK) is a washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Question 10

What is a Round Plain Nut?

Accepted Answer

A Round Plain Nut (NUT,PLAIN,ROUND) is a nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. See also NUT (1), PLAIN, KNURLED. (When height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Question 11

What is a Recessed Washer?

Accepted Answer

A Recessed Washer (WASHER,RECESSED) is a washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.

Nuts and Washers - Greece (GR)

Federal Supply Class (FSC): 5310

NATO Supply Classification Class (NSC): 5310

Federal Supply Group (FSG): 53 Hardware and Abrasives

NATO Supply Classification Group (NSG): 53 Hardware and Abrasives

Items Managed by Greece (GR) - NCB is 23

Page 4 of 4

NSN Format for Nuts and Washers
Codified by Greece

Frequently Asked Questions(FAQ) for Federal Supply Class 5310

Supply Items Included in Federal Supply Class 5310

Stock Items From Supply Class 5310 Page 4 of 4