NSN 5310-00-253-8221 · NIIN 002538221 · Part number 905-23
Littelfuse, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75915
Government record, cited
NSN 5310-00-253-8221 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-253-8221. Manufacturer of record part number: 905-23.
Also searched as5310-00-253-8221 ·
5310002538221 ·
NIIN 002538221 ·
00-253-8221 ·
FSC 5310 Nuts and Washers · CAGE 75915 · 905-23
Outside Diameter: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
Material Thickness: 0.022 INCHES NOMINAL IN
Surface Treatment: CADMIUM OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.505 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
1 manufacturer part number on file
Identification
NSN: 5310-00-253-8221
NIIN: 002538221
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 905-23
Manufacturer: Littelfuse, Inc.
General Description
The Washer,lock, cataloged under National Stock Number 5310-00-253-8221, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Littelfuse, Inc.. 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. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-253-8221
Primary Part Number
905-23
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Littelfuse, Inc.
Status
ACTIVE
Style Designator
SPLIT HELICAL-RIGHT HAND
Outside Diameter
0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
Material Thickness
0.022 INCHES NOMINAL IN
Surface Treatment
CADMIUM OVERALL
Material
STEEL OVERALL
Hole Diameter
0.505 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2810-00-589-1254POSSIBLE MATCH
RING,PISTON
Possible match (shared part number)
4730-01-214-161890523POSSIBLE MATCH
STRAINER ELEMENT,SEDIMENT
Possible match (shared part number)Eaton Aerospace Llc
4920-01-297-975390523POSSIBLE MATCH
TEST PROGRAM SET
Possible match (shared part number)Textron Systems Corporation Dba Textron Systems Corp
6525-01-470-594890523POSSIBLE MATCH
BUSHING,L ARM
Possible match (shared part number)Air Techniques, Inc.
NSN 5310-00-253-8221 is a Washer,lock, manufactured by Littelfuse, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-253-8221?
NSN 5310-00-253-8221 has 1 manufacturer part number on file: 905-23 (Littelfuse, Inc.).
What NSN replaces 5310-00-253-8221?
4 possible matches (shared part number, not a government interchangeability claim): 2810-00-589-1254, 4730-01-214-1618, 4920-01-297-9753. Verify interchangeability with system specifications before substitution.
What are the specifications of 905-23?
Key specifications for 905-23: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN; Material Thickness: 0.022 INCHES NOMINAL IN; Surface Treatment: CADMIUM OVERALL. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-253-8221 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.