Washer, Key5310-01-021-4193

NSN 5310-01-021-4193 · NIIN 010214193

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

Government record, cited

Also searched as 5310-01-021-4193 · 5310010214193 · NIIN 010214193 · 01-021-4193 · FSC 5310 Nuts and Washers · NAS1193 · NAS1193K14-2

Nearby stock numbers ← 5310-01-021-3781 · 5310-01-021-4196 Washer, Flat →

5310-01-021-4193 — Nuts and Washers

Features

Washer,key — FSC 5310
Internal Straight Key Width: 0.137 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN
Distance From Centerline to Top of Internal Key: 0.386 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN
Hardness Rating: 44.0 ROCKWELL C MAXIMUM
Style Designator: KEY
Outside Diameter: 1.310 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Material Thickness: 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
Material: STEEL COMP 630 OVERALL

Identification

NSN: 5310-01-021-4193
NIIN: 010214193
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,key, cataloged under National Stock Number 5310-01-021-4193, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-021-4193
Item Name	Washer,key
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Internal Straight Key Width	0.137 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN
Distance From Centerline to Top of Internal Key	0.386 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN
Hardness Rating	44.0 ROCKWELL C MAXIMUM
Style Designator	KEY
Outside Diameter	1.310 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Material Thickness	0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
Material	STEEL COMP 630 OVERALL
Internal Key Quantity	1
Hole Diameter	0.880 INCHES MINIMUM AND 0.896 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
NAS1193	3/1 Design control — primary reference U.S. Government activity
NAS1193K14-2	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 5310-01-021-4193?

NSN 5310-01-021-4193 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-021-4193?

Key specifications for 5310-01-021-4193: Internal Straight Key Width: 0.137 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.386 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN; Hardness Rating: 44.0 ROCKWELL C MAXIMUM; Style Designator: KEY. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-021-4193 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.

PartsTable Design LLC · partstable.com