Washer, Lock5310-01-665-0640

NSN 5310-01-665-0640 · NIIN 016650640 · Part number 050-000034-003

Neeltran, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 0A7R9

Government record, cited

NSN 5310-01-665-0640 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-665-0640. Manufacturer of record part number: 050-000034-003.

Also searched as 5310-01-665-0640 · 5310016650640 · NIIN 016650640 · 01-665-0640 · FSC 5310 Nuts and Washers · CAGE 0A7R9 · 050-000034-003 · 0149558

Nearby stock numbers ← 5310-01-665-0457 Washer, Flat · 5310-01-665-0648 Washer, Lock →

5310-01-665-0640 — Nuts and Washers

Features

Washer,lock — FSC 5310
2 manufacturer part numbers on file
Manufacturer of record: Neeltran, Inc.

Identification

NSN: 5310-01-665-0640
NIIN: 016650640
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 050-000034-003
Manufacturer: Neeltran, Inc.

General Description

The Washer,lock, cataloged under National Stock Number 5310-01-665-0640, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Neeltran, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Washer,lock
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Neeltran, Inc. (CAGE 0A7R9); Fastenal Company Dba Fastenal Co (CAGE 0Y3H3)

Technical Specifications

Parameter	Value
NSN	5310-01-665-0640
Primary Part Number	050-000034-003
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Neeltran, Inc.
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
050-000034-003 PRIMARY	Neeltran, Inc. (USA)
0149558	Fastenal Company Dba Fastenal Co (USA)

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 5310-01-665-0640?

NSN 5310-01-665-0640 is a Washer,lock, manufactured by Neeltran, Inc., classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-665-0640?

NSN 5310-01-665-0640 has 2 manufacturer part numbers on file: 050-000034-003 (Neeltran, Inc.), 0149558 (Fastenal Company Dba Fastenal Co).

Is NSN 5310-01-665-0640 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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