Washer, Flat5310-01-612-5499

NSN 5310-01-612-5499 · NIIN 016125499 · Part number 1NU62

W.w. Grainger, Inc. Div Government Sales Division · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 25795

Government record, cited

NSN 5310-01-612-5499 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-612-5499. Manufacturer of record part number: 1NU62.

Also searched as 5310-01-612-5499 · 5310016125499 · NIIN 016125499 · 01-612-5499 · FSC 5310 Nuts and Washers · CAGE 25795 · 1NU62

Nearby stock numbers ← 5310-01-612-5464 Washer, Seal · 5310-01-612-5551 Nut, Self-Locking, Hexagon →

5310-01-612-5499 — Nuts and Washers

Features

Washer,flat — FSC 5310
Overall Diameter: 0.4375 INCHES NOMINAL IN
Hardness Rating: 80.0 ROCKWELL B NOMINAL
Cross-Sectional Shape Style: RECTANGULAR
Color: SILVER OVERALL
Peripheral Shape Style: ROUND
Material: STEEL COMP 316 OVERALL
Center Hole Shape Style: ROUND

Identification

NSN: 5310-01-612-5499
NIIN: 016125499
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 1NU62
Manufacturer: W.w. Grainger, Inc. Div Government Sales Division

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-612-5499, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 9 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	5310-01-612-5499
Primary Part Number	1NU62
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	W.w. Grainger, Inc. Div Government Sales Division
Status	ACTIVE
Overall Diameter	0.4375 INCHES NOMINAL IN
Hardness Rating	80.0 ROCKWELL B NOMINAL
Cross-Sectional Shape Style	RECTANGULAR
Color	SILVER OVERALL
Peripheral Shape Style	ROUND
Material	STEEL COMP 316 OVERALL
Center Hole Shape Style	ROUND
Hole Diameter	0.1875 INCHES NOMINAL IN
Thickness	0.036 INCHES MINIMUM AND 0.065 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

Part Number	Manufacturer
1NU62 PRIMARY	W.w. Grainger, Inc. Div Government Sales Division (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 5310-01-612-5499?

NSN 5310-01-612-5499 is a Washer,flat, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-612-5499?

NSN 5310-01-612-5499 has 1 manufacturer part number on file: 1NU62 (W.w. Grainger, Inc. Div Government Sales Division).

What are the specifications of 1NU62?

Key specifications for 1NU62: Overall Diameter: 0.4375 INCHES NOMINAL IN; Hardness Rating: 80.0 ROCKWELL B NOMINAL; Cross-Sectional Shape Style: RECTANGULAR; Color: SILVER OVERALL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-612-5499 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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