PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12268561Nut,plain,extended Washer,hexago

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5310-01-341-4122 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-341-4122 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-341-4122. Primary manufacturer part number: 12268561.
Features
  • Nut,plain,extended Washer,hexago — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Nut Style: HEXAGON
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
  • Nominal Thread Size: 0.625 INCHES IN
  • Thread Quantity Per Inch: 18
  • Thread Series: UNF
  • Surface Treatment: ZINC OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4130 or Steel Comp 4140 or Steel Comp 8640 Overall construction
General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-341-4122, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-341-4122
Primary Part Number12268561
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Hardness Rating26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
Nominal Thread Size0.625 INCHES IN
Thread Quantity Per Inch18
Thread SeriesUNF
Surface TreatmentZINC OVERALL
Surface Treatment Document and ClassificationASTM B633,TY 2,CL FE/ZN8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL
Material Document and ClassificationASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 1ST MATERIAL RESPONSE OVERALL
Width Across Flats0.922 INCHES MINIMUM AND 0.939 INCHES MAXIMUM IN
Washer Thickness0.047 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
Thread Class2B
Washer Outside Diameter1.230 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6125-00-783-52291104050 INTERCHANGEABLE
Parts Kit,motor-Gen
Honeywell International, Inc Div Aerospace-Tucson
Cross-Reference Index
Part NumberManufacturer
12268561 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
11.04.05.05 Anortec SL (ESP)
9102 Plesium SL (ESP)
Related Parts
6125-00-783-5229INTERCHANGEABLE
PARTS KIT,MOTOR-GEN
1104050

Frequently Asked Questions

What is NSN 5310-01-341-4122?

NSN 5310-01-341-4122 is a Nut,plain,extended Washer,hexago, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-341-4122?

NSN 5310-01-341-4122 has 3 cross-referenced part numbers: 12268561 (U S Army Tank Automotive Command Amsta-Im-Mm), 11.04.05.05 (Anortec SL), 9102 (Plesium SL).

What NSN replaces 5310-01-341-4122?

There is 1 known substitute for 5310-01-341-4122: 6125-00-783-5229. Verify interchangeability with system specifications before substitution.

What are the specifications of 12268561?

Key specifications for 12268561: Thread Direction: RIGHT-HAND; Nut Style: HEXAGON; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM; Nominal Thread Size: 0.625 INCHES IN. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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