Washer, Flat5310-01-612-6142

NSN 5310-01-612-6142 · NIIN 016126142

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

Government record, cited

Also searched as 5310-01-612-6142 · 5310016126142 · NIIN 016126142 · 01-612-6142 · FSC 5310 Nuts and Washers · 645A818H03 · 98023A045

Nearby stock numbers ← 5310-01-612-6136 Nut, Plain, Round · 5310-01-612-6154 Washer, Spring Tension →

5310-01-612-6142 — Nuts and Washers

Features

Washer,flat — FSC 5310
Overall Diameter: 3.750 INCHES NOMINAL IN
Cross-Sectional Shape Style: BLANK RECTANGULAR
Color: YELLOW OVERALL
Surface Treatment: CHROMATE AND ZINC OVERALL
Peripheral Shape Style: ROUND
Material: STEEL OVERALL
Center Hole Shape Style: ROUND

Identification

NSN: 5310-01-612-6142
NIIN: 016126142
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-612-6142, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-01-612-6142
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Overall Diameter	3.750 INCHES NOMINAL IN
Cross-Sectional Shape Style	BLANK RECTANGULAR
Color	YELLOW OVERALL
Surface Treatment	CHROMATE AND ZINC OVERALL
Peripheral Shape Style	ROUND
Material	STEEL OVERALL
Center Hole Shape Style	ROUND
Hole Diameter	2.125 INCHES NOMINAL IN
Thickness	0.170 INCHES MINIMUM AND 0.210 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
645A818H03	D/9 Drawing number reference only U.S. Government activity
98023A045	3/1 Design control — primary reference Mcmaster-Carr Supply Co

Frequently Asked Questions

What is NSN 5310-01-612-6142?

NSN 5310-01-612-6142 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-612-6142?

Key specifications for 5310-01-612-6142: Overall Diameter: 3.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Color: YELLOW OVERALL; Special Features: ASR-9 FLAT WASHER PEDESTAL MOUNTING; GRADE 8 STEEL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-612-6142 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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