NSN 5310-01-321-4332 · NIIN 013214332 · Part number 74A551866-2001
The Boeing Company Div Defense · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 76301
Government record, cited
NSN 5310-01-321-4332 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-321-4332. Manufacturer of record part number: 74A551866-2001.
Also searched as5310-01-321-4332 ·
5310013214332 ·
NIIN 013214332 ·
01-321-4332 ·
FSC 5310 Nuts and Washers · CAGE 76301 · 74A551866-2001
Material Document and Classification: QQ-A-250/11 T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 2.600 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
Material Thickness: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
Specification/standard Data: 76301-74A551866-2001 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Material: ALUMINUM ALLOY 6061 OVERALL
Hole Diameter: 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN
Identification
NSN: 5310-01-321-4332
NIIN: 013214332
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 74A551866-2001
Manufacturer: The Boeing Company Div Defense
General Description
The Washer,concave, cataloged under National Stock Number 5310-01-321-4332, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 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
5310-01-321-4332
Primary Part Number
74A551866-2001
Item Name
Washer,concave
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
The Boeing Company Div Defense
Status
ACTIVE
Style Designator
CONCAVE
Material Document and Classification
QQ-A-250/11 T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter
2.600 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
Material Thickness
0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
Specification/standard Data
76301-74A551866-2001 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 5310-01-321-4332?
NSN 5310-01-321-4332 is a Washer,concave, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-321-4332?
NSN 5310-01-321-4332 has 1 manufacturer part number on file: 74A551866-2001 (The Boeing Company Div Defense).
What are the specifications of 74A551866-2001?
Key specifications for 74A551866-2001: Style Designator: CONCAVE; Material Document and Classification: QQ-A-250/11 T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.600 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN; Material Thickness: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-321-4332 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.