NSN 5310-01-440-5791 · NIIN 014405791 · Part number 1011-957
Woodward, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 31361
Government record, cited
NSN 5310-01-440-5791 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-440-5791. Manufacturer of record part number: 1011-957.
Also searched as5310-01-440-5791 ·
5310014405791 ·
NIIN 014405791 ·
01-440-5791 ·
FSC 5310 Nuts and Washers · CAGE 31361 · 1011-957
Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
Style Designator: SPLIT HELICAL-RIGHT HAND
Outside Diameter: 1.072 INCHES MAXIMUM IN
Material Thickness: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Material: STEEL CORROSION RESISTING OVERALL
Hole Diameter: 0.628 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
1 manufacturer part number on file
Identification
NSN: 5310-01-440-5791
NIIN: 014405791
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 1011-957
Manufacturer: Woodward, Inc.
General Description
The Washer,lock, cataloged under National Stock Number 5310-01-440-5791, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc.. 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
5310-01-440-5791
Primary Part Number
1011-957
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Woodward, Inc.
Status
ACTIVE
Hardness Rating
35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
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 5310-01-440-5791?
NSN 5310-01-440-5791 is a Washer,lock, manufactured by Woodward, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-440-5791?
NSN 5310-01-440-5791 has 1 manufacturer part number on file: 1011-957 (Woodward, Inc.).
What are the specifications of 1011-957?
Key specifications for 1011-957: Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 1.072 INCHES MAXIMUM IN; Material Thickness: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-440-5791 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.