NSN 5310-01-121-8525 · NIIN 011218525 · Part number 74A411520-2001
The Boeing Company Div Defense · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 76301
Government record, cited
NSN 5310-01-121-8525 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-121-8525. Manufacturer of record part number: 74A411520-2001.
Also searched as5310-01-121-8525 ·
5310011218525 ·
NIIN 011218525 ·
01-121-8525 ·
FSC 5310 Nuts and Washers · CAGE 76301 · 74A411520-2001
Material Document and Classification: QQ-A-225/9,TEMPER T7351 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-367,TEMPER T7352 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 3.865 INCHES NOMINAL IN
Material Thickness: 0.186 INCHES NOMINAL IN
Material: ALUMINUM ALLOY 7075 OVERALL
Hole Diameter: 3.492 INCHES MINIMUM AND 3.494 INCHES MAXIMUM IN
1 manufacturer part number on file
Identification
NSN: 5310-01-121-8525
NIIN: 011218525
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 74A411520-2001
Manufacturer: The Boeing Company Div Defense
General Description
The Washer,recessed, cataloged under National Stock Number 5310-01-121-8525, 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 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
5310-01-121-8525
Primary Part Number
74A411520-2001
Item Name
Washer,recessed
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
The Boeing Company Div Defense
Status
ACTIVE
Style Designator
RECESSED
Material Document and Classification
QQ-A-225/9,TEMPER T7351 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-367,TEMPER T7352 FED SPEC SINGLE MATERIAL RESPONSE 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 5310-01-121-8525?
NSN 5310-01-121-8525 is a Washer,recessed, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-121-8525?
NSN 5310-01-121-8525 has 1 manufacturer part number on file: 74A411520-2001 (The Boeing Company Div Defense).
What are the specifications of 74A411520-2001?
Key specifications for 74A411520-2001: Overall Height: 0.820 INCHES NOMINAL IN; Style Designator: RECESSED; Material Document and Classification: QQ-A-225/9,TEMPER T7351 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-367,TEMPER T7352 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.865 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-121-8525 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.