NSN 5310-01-657-7391 · NIIN 016577391 · Part number 91102A040
Mcmaster-Carr Supply Co · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5310-01-657-7391 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-657-7391. Manufacturer of record part number: 91102A040.
Also searched as5310-01-657-7391 ·
5310016577391 ·
NIIN 016577391 ·
01-657-7391 ·
FSC 5310 Nuts and Washers · CAGE 39428 · 91102A040
Specification/standard Data: ASME B18.21.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Surface Treatment: ZINC OVERALL
Environmental Protection: CORROSION RESISTANT
Identification
NSN: 5310-01-657-7391
NIIN: 016577391
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 91102A040
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Washer,lock, cataloged under National Stock Number 5310-01-657-7391, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 9 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
5310-01-657-7391
Primary Part Number
91102A040
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Hardness Rating
38.0 ROCKWELL C NOMINAL
Style Designator
SPLIT HELICAL-RIGHT HAND
Outside Diameter
2.036 INCHES NOMINAL IN
Material Thickness
0.312 INCHES NOMINAL IN
Specification/standard Data
ASME B18.21.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
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 5310-01-657-7391?
NSN 5310-01-657-7391 is a Washer,lock, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-657-7391?
NSN 5310-01-657-7391 has 1 manufacturer part number on file: 91102A040 (Mcmaster-Carr Supply Co).
What are the specifications of 91102A040?
Key specifications for 91102A040: Hardness Rating: 38.0 ROCKWELL C NOMINAL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 2.036 INCHES NOMINAL IN; Material Thickness: 0.312 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-657-7391 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.