Washer, Lock5310-01-528-0240

NSN 5310-01-528-0240 · NIIN 015280240 · Part number 112LWSSBO

Fasteners Unlimited Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 47346

Government record, cited

NSN 5310-01-528-0240 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-528-0240. Manufacturer of record part number: 112LWSSBO.

Also searched as 5310-01-528-0240 · 5310015280240 · NIIN 015280240 · 01-528-0240 · FSC 5310 Nuts and Washers · CAGE 47346 · 112LWSSBO

Nearby stock numbers ← 5310-01-528-0214 Nut, Plain, Wing · 5310-01-528-0292 Washer, Flat →

5310-01-528-0240 — Nuts and Washers

Features

Washer,lock — FSC 5310
Style Designator: SPLIT HELICAL-RIGHT HAND
Color: BLACK OVERALL
Surface Treatment: OXIDE OVERALL
Material: STEEL CORROSION RESISTING OVERALL
1 manufacturer part number on file
Manufacturer of record: Fasteners Unlimited Inc

Identification

NSN: 5310-01-528-0240
NIIN: 015280240
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 112LWSSBO
Manufacturer: Fasteners Unlimited Inc

General Description

The Washer,lock, cataloged under National Stock Number 5310-01-528-0240, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fasteners Unlimited Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-528-0240
Primary Part Number	112LWSSBO
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Fasteners Unlimited Inc
Status	ACTIVE
Style Designator	SPLIT HELICAL-RIGHT HAND
Color	BLACK OVERALL
Surface Treatment	OXIDE OVERALL
Material	STEEL CORROSION RESISTING OVERALL

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
112LWSSBO PRIMARY	Fasteners Unlimited Inc (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 5310-01-528-0240?

NSN 5310-01-528-0240 is a Washer,lock, manufactured by Fasteners Unlimited Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-528-0240?

NSN 5310-01-528-0240 has 1 manufacturer part number on file: 112LWSSBO (Fasteners Unlimited Inc).

What are the specifications of 112LWSSBO?

Key specifications for 112LWSSBO: Style Designator: SPLIT HELICAL-RIGHT HAND; Color: BLACK OVERALL; Surface Treatment: OXIDE OVERALL; Part Name Assigned by Controlling Agency: NUMBER 4 STAINLESS STEEL LOCK WASHER, BLACK OXIDE. 4 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-528-0240 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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