Washer, Recessed5310-01-181-0818

NSN 5310-01-181-0818 · NIIN 011810818

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

Government record, cited

Also searched as 5310-01-181-0818 · 5310011810818 · NIIN 011810818 · 01-181-0818 · FSC 5310 Nuts and Washers · 709-4684916 ITEM 7 · 30-01-7864 · 4684916-0007

Nearby stock numbers ← 5310-01-181-0817 · 5310-01-181-1124 Nut, Self-Locking, Extended Washer →

5310-01-181-0818 — Nuts and Washers

Features

Washer,recessed — FSC 5310
Style Designator: RECESSED
Material Document and Classification: QQ-S-741 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 3.750 INCHES NOMINAL IN
Material Thickness: 0.125 INCHES NOMINAL IN
Recess Diameter: 2.493 INCHES MINIMUM AND 2.498 INCHES MAXIMUM IN
Material: STEEL OVERALL
Hole Diameter: 2.369 INCHES MINIMUM AND 2.374 INCHES MAXIMUM IN

Identification

NSN: 5310-01-181-0818
NIIN: 011810818
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,recessed, cataloged under National Stock Number 5310-01-181-0818, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-01-181-0818
Item Name	Washer,recessed
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Style Designator	RECESSED
Material Document and Classification	QQ-S-741 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	3.750 INCHES NOMINAL IN
Material Thickness	0.125 INCHES NOMINAL IN
Recess Diameter	2.493 INCHES MINIMUM AND 2.498 INCHES MAXIMUM IN
Material	STEEL OVERALL
Hole Diameter	2.369 INCHES MINIMUM AND 2.374 INCHES MAXIMUM IN
Recess Angle	90.0 DEGREES NOMINAL

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
709-4684916 ITEM 7	3/2 Design control — primary reference U.S. Government activity
30-01-7864	5/9 Secondary reference U.S. Government activity
4684916-0007	5/9 Secondary 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 5310-01-181-0818?

NSN 5310-01-181-0818 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-181-0818?

Key specifications for 5310-01-181-0818: Style Designator: RECESSED; Material Document and Classification: QQ-S-741 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.750 INCHES NOMINAL IN; Material Thickness: 0.125 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-181-0818 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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