NSN 5310-01-528-2731 · NIIN 015282731 · Part number 23-03520-162
Richards Industries Valve Group Birkett/richards Div · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 22167
Government record, cited
NSN 5310-01-528-2731 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-528-2731. Manufacturer of record part number: 23-03520-162.
Also searched as5310-01-528-2731 ·
5310015282731 ·
NIIN 015282731 ·
01-528-2731 ·
FSC 5310 Nuts and Washers · CAGE 22167 · 23-03520-162
Manufacturer of record: Richards Industries Valve Group Birkett/richards Div
Identification
NSN: 5310-01-528-2731
NIIN: 015282731
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 23-03520-162
Manufacturer: Richards Industries Valve Group Birkett/richards Div
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-528-2731, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Richards Industries Valve Group Birkett/richards Div. Government technical data includes 3 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
5310-01-528-2731
Primary Part Number
23-03520-162
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Richards Industries Valve Group Birkett/richards Div
Richards Industries Valve Group Birkett/richards Div (USA)
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
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 5310-01-528-2731?
NSN 5310-01-528-2731 is a Washer,flat, manufactured by Richards Industries Valve Group Birkett/richards Div, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-528-2731?
NSN 5310-01-528-2731 has 1 manufacturer part number on file: 23-03520-162 (Richards Industries Valve Group Birkett/richards Div).
What are the specifications of 23-03520-162?
Key specifications for 23-03520-162: Overall Diameter: 0.485 INCHES NOMINAL IN; Outside Radius: 0.650 INCHES NOMINAL IN; Special Features: MATERIAL IS: POLYTETRAFLUOROETHYLENE 20% AND CARBON 5%; Part Name Assigned by Controlling Agency: WASHER,THRUST. 3 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-528-2731 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.