NSN 5310-00-613-4940 · NIIN 006134940 · Part number 2660566
Air-Com, Inc. Dba Air-Com, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 2Y870
Government record, cited
NSN 5310-00-613-4940 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-613-4940. Manufacturer of record part number: 2660566.
Also searched as5310-00-613-4940 ·
5310006134940 ·
NIIN 006134940 ·
00-613-4940 ·
FSC 5310 Nuts and Washers · CAGE 2Y870 · 2660566
Nearby stock numbers← 5310-00-613-4899
·
5310-00-613-4966 Washer, Special →
5310-00-613-4940 — Nuts and Washers
Features
Washer,recessed — FSC 5310
Style Designator: RECESSED
Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 4.094 INCHES NOMINAL IN
Material Thickness: 0.125 INCHES NOMINAL IN
Recess Diameter: 2.937 INCHES MINIMUM AND 2.947 INCHES MAXIMUM IN
Material: ALUMINUM ALLOY OVERALL
Hole Diameter: 2.750 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
Identification
NSN: 5310-00-613-4940
NIIN: 006134940
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 2660566
Manufacturer: Air-Com, Inc. Dba Air-Com, Inc.
General Description
The Washer,recessed, cataloged under National Stock Number 5310-00-613-4940, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Air-Com, Inc. Dba Air-Com, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-613-4940
Primary Part Number
2660566
Item Name
Washer,recessed
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Air-Com, Inc. Dba Air-Com, Inc.
Status
ACTIVE
Style Designator
RECESSED
Material Document and Classification
QQ-C-390 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 5310-00-613-4940?
NSN 5310-00-613-4940 is a Washer,recessed, manufactured by Air-Com, Inc. Dba Air-Com, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-613-4940?
NSN 5310-00-613-4940 has 2 manufacturer part numbers on file: 2660566 (Air-Com, Inc. Dba Air-Com, Inc.), 2660566 (The Boeing Company).
What are the specifications of 2660566?
Key specifications for 2660566: Style Designator: RECESSED; Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 4.094 INCHES NOMINAL IN; Material Thickness: 0.125 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-613-4940 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.