Washer, Recessed5310-01-312-7661

NSN 5310-01-312-7661 · NIIN 013127661

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

Government record, cited

Also searched as 5310-01-312-7661 · 5310013127661 · NIIN 013127661 · 01-312-7661 · FSC 5310 Nuts and Washers

Nearby stock numbers ← 5310-01-312-7660 Nut, Plain, Hexagon · 5310-01-312-7936 Nut, Plain, Hexagon →

5310-01-312-7661 — Nuts and Washers

Features

Washer,recessed — FSC 5310
Style Designator: RECESSED
Material Document and Classification: MIL-T-9046,TY 3,COMP C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 0.828 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN
Material Thickness: 0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
Specification/standard Data: 81205-BACW10BX MANUFACTURERS STANDARD
Recess Diameter: 0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
Material: TITANIUM ALLOY UNS R56400 OVERALL

Identification

NSN: 5310-01-312-7661
NIIN: 013127661
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,recessed, cataloged under National Stock Number 5310-01-312-7661, 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9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-312-7661
Item Name	Washer,recessed
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Style Designator	RECESSED
Material Document and Classification	MIL-T-9046,TY 3,COMP C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	0.828 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN
Material Thickness	0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
Specification/standard Data	81205-BACW10BX MANUFACTURERS STANDARD
Recess Diameter	0.614 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
Material	TITANIUM ALLOY UNS R56400 OVERALL
Hole Diameter	0.502 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
Recess Angle	90.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM

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
BACW10BX8C	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 5310-01-312-7661?

NSN 5310-01-312-7661 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-312-7661?

Key specifications for 5310-01-312-7661: Style Designator: RECESSED; Material Document and Classification: MIL-T-9046,TY 3,COMP C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.828 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN; Material Thickness: 0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-312-7661 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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