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NSN 5310-01-256-5231Government record, cited
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Washer, Saddle5310-01-256-5231

NSN 5310-01-256-5231 · NIIN 012565231
FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5310-01-256-5231 · 5310012565231 · NIIN 012565231 · 01-256-5231 · FSC 5310 Nuts and Washers · NASM45595/5-01 · MIL-W-45595/5-01 · A-128 · AD907214-1
Nearby stock numbers  ·
AF 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN H 0.578 INCHES NOMINAL IN NUT + WASHER
5310-01-256-5231 — Nuts and Washers
Features
  • Washer,saddle — FSC 5310
  • Surface Treatment Document and Classification: MIL-A-8625,TY2,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Style Designator: SADDLE
  • Material Document and Classification: QQ-A-250/2,H14 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: ANODIZE OVERALL
  • Material: ALUMINUM ALLOY 3003 OVERALL
  • Hole Diameter: 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
Identification
  • NSN: 5310-01-256-5231
  • NIIN: 012565231
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
General Description

The Washer,saddle, cataloged under National Stock Number 5310-01-256-5231, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-256-5231
Item NameWasher,saddle
FSC / FSG5310 / 53 — Nuts and Washers
StatusACTIVE
Surface Treatment Document and ClassificationMIL-A-8625,TY2,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorSADDLE
Material Document and ClassificationQQ-A-250/2,H14 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentANODIZE OVERALL
MaterialALUMINUM ALLOY 3003 OVERALL
Hole Diameter0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5120-01-430-9987A128 POSSIBLE MATCH
ADAPTER,SOCKET WRENCH
Possible match (shared part number)Stanley Industrial & Automotive Llc
4140-01-486-3873A128 POSSIBLE MATCH
BLOWER,EXHAUST
Possible match (shared part number)Fasco Industries Inc
8455-01-528-8592 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-541-3154 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-541-3158 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-664-0616 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-699-7721 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
NASM45595/5-01 3/2 Design control — primary reference
U.S. Government activity
MIL-W-45595/5-01 5/9 Secondary reference
U.S. Government activity
A-128 5/9 Secondary reference
U.S. Government activity
AD907214-1 5/9 Secondary reference
Honeywell International Inc. Dba Honeywell International
Related Parts
5120-01-430-9987POSSIBLE MATCH
ADAPTER,SOCKET WRENCH
A128
4140-01-486-3873POSSIBLE MATCH
BLOWER,EXHAUST
A128
8455-01-528-8592POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-541-3154POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-541-3158POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-664-0616POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-699-7721POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 5310-01-256-5231?

NSN 5310-01-256-5231 is a Washer,saddle, classified under FSC 5310, Nuts and Washers. Status: active.

What NSN replaces 5310-01-256-5231?

7 possible matches (shared part number, not a government interchangeability claim): 5120-01-430-9987, 4140-01-486-3873, 8455-01-528-8592. Verify interchangeability with system specifications before substitution.

What are the specifications of 5310-01-256-5231?

Key specifications for 5310-01-256-5231: Overall Height: 0.094 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625,TY2,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SADDLE; Material Document and Classification: QQ-A-250/2,H14 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-256-5231 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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