PartsTable TECHNICAL DATA SHEET

NSN 5310-01-306-4645Government record, cited

Washer, Spring Tension5310-01-306-4645

NSN 5310-01-306-4645 · NIIN 013064645 · Part number B0312-017-S

Barnes Group Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 74197

Government record, cited

NSN 5310-01-306-4645 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-306-4645. Manufacturer of record part number: B0312-017-S.

Also searched as 5310-01-306-4645 · 5310013064645 · NIIN 013064645 · 01-306-4645 · FSC 5310 Nuts and Washers · CAGE 74197 · B0312-017-S · 934017

Nearby stock numbers ← 5310-01-306-4643 Washer, Lock · 5310-01-306-4771 →

5310-01-306-4645 — Nuts and Washers

Features

Washer,spring Tension — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Barnes Group Inc.

Identification

NSN: 5310-01-306-4645
NIIN: 013064645
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: B0312-017-S
Manufacturer: Barnes Group Inc.

General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-01-306-4645, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	Washer,spring Tension
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Barnes Group Inc. (CAGE 74197)

Technical Specifications

Parameter	Value
NSN	5310-01-306-4645
Primary Part Number	B0312-017-S
Item Name	Washer,spring Tension
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Barnes Group 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)

Cross-Reference Index

Part Number	Manufacturer
B0312-017-S PRIMARY	Barnes Group Inc. (USA)

Reference documents

Reference	Meaning
934017	5/9 Secondary reference Lockheed Martin Corp Electronics and Missiles Div
B0312-017-S	5/9 Secondary reference U.S. Government activity

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 5310-01-306-4645?

NSN 5310-01-306-4645 is a Washer,spring Tension, manufactured by Barnes Group Inc., classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-306-4645?

NSN 5310-01-306-4645 has 1 manufacturer part number on file: B0312-017-S (Barnes Group Inc.).

Is NSN 5310-01-306-4645 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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