Washer, Shouldered5310-01-496-0312

NSN 5310-01-496-0312 · NIIN 014960312 · Part number MCS-01-612-010-2

United States Coast Guard Yard · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 06101

Government record, cited

NSN 5310-01-496-0312 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-496-0312. Manufacturer of record part number: MCS-01-612-010-2.

Also searched as 5310-01-496-0312 · 5310014960312 · NIIN 014960312 · 01-496-0312 · FSC 5310 Nuts and Washers · CAGE 06101 · MCS-01-612-010-2

Nearby stock numbers ← 5310-01-496-0262 Washer, Spring Tension · 5310-01-496-0328 Washer →

5310-01-496-0312 — Nuts and Washers

Features

Washer,shouldered — FSC 5310
Shoulder Height: 0.750 INCHES NOMINAL IN
Style Designator: SHOULDERED AND RECESSED
Outside Diameter: 4.000 INCHES NOMINAL IN
Shoulder Diameter: 2.750 INCHES NOMINAL IN
Recess Diameter: 1.562 INCHES NOMINAL IN
Material: STEEL OVERALL
Hole Diameter: 0.562 INCHES NOMINAL IN

Identification

NSN: 5310-01-496-0312
NIIN: 014960312
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: MCS-01-612-010-2
Manufacturer: United States Coast Guard Yard

General Description

The Washer,shouldered, cataloged under National Stock Number 5310-01-496-0312, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is United States Coast Guard Yard. Government technical data includes 7 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	5310-01-496-0312
Primary Part Number	MCS-01-612-010-2
Item Name	Washer,shouldered
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	United States Coast Guard Yard
Status	ACTIVE
Shoulder Height	0.750 INCHES NOMINAL IN
Style Designator	SHOULDERED AND RECESSED
Outside Diameter	4.000 INCHES NOMINAL IN
Shoulder Diameter	2.750 INCHES NOMINAL IN
Recess Diameter	1.562 INCHES NOMINAL IN
Material	STEEL OVERALL
Hole Diameter	0.562 INCHES NOMINAL 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
MCS-01-612-010-2 PRIMARY	United States Coast Guard Yard (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 5310-01-496-0312?

NSN 5310-01-496-0312 is a Washer,shouldered, manufactured by United States Coast Guard Yard, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-496-0312?

NSN 5310-01-496-0312 has 1 manufacturer part number on file: MCS-01-612-010-2 (United States Coast Guard Yard).

What are the specifications of MCS-01-612-010-2?

Key specifications for MCS-01-612-010-2: Overall Height: 1.250 INCHES NOMINAL IN; Shoulder Height: 0.750 INCHES NOMINAL IN; Style Designator: SHOULDERED AND RECESSED; Outside Diameter: 4.000 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-496-0312 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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