PartsTable TECHNICAL DATA SHEET

NSN 5310-01-646-7940Government record, cited

Nut, Self-Locking, Hexagon5310-01-646-7940

NSN 5310-01-646-7940 · NIIN 016467940 · Part number 90040A143

Mcmaster-Carr Supply Co · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 39428

Government record, cited

NSN 5310-01-646-7940 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-646-7940. Manufacturer of record part number: 90040A143.

Also searched as 5310-01-646-7940 · 5310016467940 · NIIN 016467940 · 01-646-7940 · FSC 5310 Nuts and Washers · CAGE 39428 · 90040A143 · 9413948 · 91837A267

Nearby stock numbers ← 5310-01-646-7869 Washer, Flat · 5310-01-646-8130 Washer, Flat →

5310-01-646-7940 — Nuts and Washers

Features

Nut,self-Locking,hexagon — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Mcmaster-Carr Supply Co

Identification

NSN: 5310-01-646-7940
NIIN: 016467940
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 90040A143
Manufacturer: Mcmaster-Carr Supply Co

General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-646-7940, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Nut,self-Locking,hexagon
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Mcmaster-Carr Supply Co (CAGE 39428)

Technical Specifications

Parameter	Value
NSN	5310-01-646-7940
Primary Part Number	90040A143
Item Name	Nut,self-Locking,hexagon
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Mcmaster-Carr Supply Co
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
90040A143	Mcmaster-Carr Supply Co (USA)

Reference documents

Reference	Meaning
9413948	3/2 Design control — primary reference U.S. Government activity
91837A267	5/9 Secondary reference Mcmaster-Carr Supply Co

No interchangeability data on file.

Other items in FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040

5310-00-000-0040 · Item name not on file

5310-00-000-0077

NUT,PLAIN,ROUND

5310-00-000-0079

WASHER,FLAT

5310-00-000-0079

WASHER,FLAT

5310-00-000-1146

5310-00-000-1146 · Item name not on file

5310-00-000-3815

5310-00-000-3815 · Item name not on file

5310-00-000-4532

5310-00-000-4532 · Item name not on file

5310-00-000-4540

5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-01-646-7940?

NSN 5310-01-646-7940 is a Nut,self-Locking,hexagon, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-646-7940?

NSN 5310-01-646-7940 has 1 manufacturer part number on file: 90040A143 (Mcmaster-Carr Supply Co).

Is NSN 5310-01-646-7940 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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