NSN 5310-01-533-5660 · NIIN 015335660 · Part number 91090A103
Mcmaster-Carr Supply Co · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5310-01-533-5660 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-533-5660. Manufacturer of record part number: 91090A103.
Also searched as5310-01-533-5660 ·
5310015335660 ·
NIIN 015335660 ·
01-533-5660 ·
FSC 5310 Nuts and Washers · CAGE 39428 · 91090A103 · HW20068
Material: STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OVERALL
Hole Diameter: 0.203 INCHES NOMINAL IN
Thickness: 0.047 INCHES NOMINAL IN
2 manufacturer part numbers on file
Identification
NSN: 5310-01-533-5660
NIIN: 015335660
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 91090A103
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-533-5660, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-01-533-5660
Primary Part Number
91090A103
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Overall Diameter
0.500 INCHES NOMINAL IN
Hardness Rating
49.0 ROCKWELL B NOMINAL
Cross-Sectional Shape Style
RECTANGULAR
Material
STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OVERALL
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 5310-01-533-5660?
NSN 5310-01-533-5660 is a Washer,flat, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-533-5660?
NSN 5310-01-533-5660 has 2 manufacturer part numbers on file: HW20068 (Armatec Survivability Corp Div Armatec Survivability), 91090A103 (Mcmaster-Carr Supply Co).
What are the specifications of 91090A103?
Key specifications for 91090A103: Overall Diameter: 0.500 INCHES NOMINAL IN; Hardness Rating: 49.0 ROCKWELL B NOMINAL; Cross-Sectional Shape Style: RECTANGULAR; Part Name Assigned by Controlling Agency: WASHER FLAT. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-533-5660 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.