Washer, Saddle5310-01-166-8579

NSN 5310-01-166-8579 · NIIN 011668579 · Part number SS4411-08S322

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

Government record, cited

NSN 5310-01-166-8579 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-166-8579. Manufacturer of record part number: SS4411-08S322.

Also searched as 5310-01-166-8579 · 5310011668579 · NIIN 011668579 · 01-166-8579 · FSC 5310 Nuts and Washers · CAGE 78286 · SS4411-08S322

Nearby stock numbers ← 5310-01-166-8578 Nut, Self-Locking, Hexagon · 5310-01-166-8580 Washer, Recessed →

5310-01-166-8579 — Nuts and Washers

Features

Washer,saddle — FSC 5310
Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator: SADDLE
Material Thickness: 0.035 INCHES NOMINAL IN
Surface Treatment: CADMIUM OVERALL
Material: STEEL COMP 4130 OVERALL
Hole Diameter: 0.250 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
1 manufacturer part number on file

Identification

NSN: 5310-01-166-8579
NIIN: 011668579
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: SS4411-08S322
Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

General Description

The Washer,saddle, cataloged under National Stock Number 5310-01-166-8579, 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 6 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	5310-01-166-8579
Primary Part Number	SS4411-08S322
Item Name	Washer,saddle
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Status	ACTIVE
Surface Treatment Document and Classification	QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator	SADDLE
Material Thickness	0.035 INCHES NOMINAL IN
Surface Treatment	CADMIUM OVERALL
Material	STEEL COMP 4130 OVERALL
Hole Diameter	0.250 INCHES MINIMUM AND 0.255 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
SS4411-08S322 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 5310-01-166-8579?

NSN 5310-01-166-8579 is a Washer,saddle, 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 5310-01-166-8579?

NSN 5310-01-166-8579 has 1 manufacturer part number on file: SS4411-08S322 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What are the specifications of SS4411-08S322?

Key specifications for SS4411-08S322: Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SADDLE; Overall Length: 0.500 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-166-8579 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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