Washer, Lock5310-01-620-1255

NSN 5310-01-620-1255 · NIIN 016201255

FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5310-01-620-1255 · 5310016201255 · NIIN 016201255 · 01-620-1255 · FSC 5310 Nuts and Washers

Nearby stock numbers ← 5310-01-620-1249 Washer, Flat · 5310-01-620-1387 Nut, Plain, Hexagon →

5310-01-620-1255 — Nuts and Washers

Features

Washer,lock — FSC 5310
Surface Treatment Document and Classification: QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
Style Designator: SPLIT HELICAL-RIGHT HAND
Material Document and Classification: ASTM A29 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 1.838 INCHES MAXIMUM IN
Material Thickness: 0.328 INCHES MINIMUM IN
Surface Treatment: CADMIUM OVERALL

Identification

NSN: 5310-01-620-1255
NIIN: 016201255
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,lock, cataloged under National Stock Number 5310-01-620-1255, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-620-1255
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Surface Treatment Document and Classification	QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating	38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
Style Designator	SPLIT HELICAL-RIGHT HAND
Material Document and Classification	ASTM A29 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	1.838 INCHES MAXIMUM IN
Material Thickness	0.328 INCHES MINIMUM IN
Surface Treatment	CADMIUM OVERALL
Material	STEEL OVERALL
Hole Diameter	1.129 INCHES MINIMUM AND 1.144 INCHES MAXIMUM IN

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
BACW10EC18S	3/2 Design control — primary 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 5310-01-620-1255?

NSN 5310-01-620-1255 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-620-1255?

Key specifications for 5310-01-620-1255: Surface Treatment Document and Classification: QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: ASTM A29 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-620-1255 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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