Washer, Shouldered and Recessed5310-01-127-8061

NSN 5310-01-127-8061 · NIIN 011278061 · Part number 65391-11610-101

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 78286

Government record, cited

NSN 5310-01-127-8061 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-127-8061. Manufacturer of record part number: 65391-11610-101.

Also searched as 5310-01-127-8061 · 5310011278061 · NIIN 011278061 · 01-127-8061 · FSC 5310 Nuts and Washers · CAGE 78286 · 65391-11610-101

Nearby stock numbers ← 5310-01-127-8060 Washer, Flat · 5310-01-127-8062 Washer, Spring Tension →

5310-01-127-8061 — Nuts and Washers

Features

Washer,shouldered and Recessed — FSC 5310
Surface Treatment Document and Classification: MIL-C-13924 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Shoulder Height: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
Style Designator: SHOULDERED AND RECESSED
Material Document and Classification: MIL-S-5000 COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 12.680 INCHES NOMINAL IN
Material Thickness: 0.250 INCHES NOMINAL IN

Identification

NSN: 5310-01-127-8061
NIIN: 011278061
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 65391-11610-101
Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

General Description

The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-127-8061, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 14 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	5310-01-127-8061
Primary Part Number	65391-11610-101
Item Name	Washer,shouldered and Recessed
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Status	ACTIVE
Surface Treatment Document and Classification	MIL-C-13924 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Shoulder Height	0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
Hardness Rating	34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
Style Designator	SHOULDERED AND RECESSED
Material Document and Classification	MIL-S-5000 COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	12.680 INCHES NOMINAL IN
Material Thickness	0.250 INCHES NOMINAL IN
Shoulder Diameter	12.320 INCHES NOMINAL IN
Recess Diameter	12.010 INCHES NOMINAL IN
Color	BLACK OVERALL
Surface Treatment	OXIDE OVERALL
Material	STEEL COMP 4340 OVERALL
Hole Diameter	11.506 INCHES MINIMUM AND 11.516 INCHES MAXIMUM IN
Recess Angle	120.0 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

Part Number	Manufacturer
65391-11610-101 PRIMARY	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (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 5310-01-127-8061?

NSN 5310-01-127-8061 is a Washer,shouldered and Recessed, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-127-8061?

NSN 5310-01-127-8061 has 1 manufacturer part number on file: 65391-11610-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What are the specifications of 65391-11610-101?

Key specifications for 65391-11610-101: Surface Treatment Document and Classification: MIL-C-13924 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Style Designator: SHOULDERED AND RECESSED. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-127-8061 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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