NSN 5310-00-209-1691 · NIIN 002091691 · Part number 7R4-16D
The Boeing Company Div Legacy Am&m · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 43999
Government record, cited
NSN 5310-00-209-1691 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-1691. Manufacturer of record part number: 7R4-16D.
Also searched as5310-00-209-1691 ·
5310002091691 ·
NIIN 002091691 ·
00-209-1691 ·
FSC 5310 Nuts and Washers · CAGE 43999 · 7R4-16D
Surface Treatment Document and Classification: QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator: RECESSED
Material Document and Classification: QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/5 FED SPEC 3RD MATERIAL RESPONSE OVERALL
Outside Diameter: 1.237 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
Recess Depth: 0.104 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
Material Thickness: 0.078 INCHES NOMINAL IN
Identification
NSN: 5310-00-209-1691
NIIN: 002091691
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 7R4-16D
Manufacturer: The Boeing Company Div Legacy Am&m
General Description
The Washer,recessed, cataloged under National Stock Number 5310-00-209-1691, 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 Legacy Am&m. Government technical data includes 10 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
5310-00-209-1691
Primary Part Number
7R4-16D
Item Name
Washer,recessed
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
The Boeing Company Div Legacy Am&m
Status
ACTIVE
Surface Finish
100.0 MICROINCHES ALL SURFACES
Surface Treatment Document and Classification
QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator
RECESSED
Material Document and Classification
QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/5 FED SPEC 3RD MATERIAL RESPONSE OVERALL
Outside Diameter
1.237 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
Recess Depth
0.104 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
Material Thickness
0.078 INCHES NOMINAL IN
Surface Treatment
ANODIZE OVERALL
Material
ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2017 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 5310-00-209-1691?
NSN 5310-00-209-1691 is a Washer,recessed, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-209-1691?
NSN 5310-00-209-1691 has 2 manufacturer part numbers on file: 7R4-16D (The Boeing Company Div Legacy Am&m), 7R4-16D (Fabrication Specialty Inc Dba Fabrication Specialty Inc).
What are the specifications of 7R4-16D?
Key specifications for 7R4-16D: Surface Finish: 100.0 MICROINCHES ALL SURFACES; Overall Height: 0.155 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-209-1691 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.