PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILB45912Bolt,machine

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-022-1953 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-022-1953 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-022-1953. Primary manufacturer part number: MILB45912.
Features
  • Bolt,machine — FSC 5306
  • Fastener Length: 1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN
  • Minimum Tensile Strength: 95000 POUNDS PER SQUARE INCH LBS
  • Head Height: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Thread Series Designator: UNF
  • Minimum Yield Strength: 85000 POUNDS PER SQUARE INCH LBS
  • Material: STEEL COMP 1035 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1035 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-022-1953, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-022-1953
Primary Part NumberMILB45912
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Fastener Length1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN
Minimum Tensile Strength95000 POUNDS PER SQUARE INCH LBS
Head Height0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNF
Minimum Yield Strength85000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL COMP 1035 OVERALL
Nominal Thread Diameter0.375 INCHES IN
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
Locking FeatureDISTORTIONS BEARING SURFACE OF HEAD
Thread Quantity Per Inch24
Hardness Rating96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL B MAXIMUM OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Features ProvidedFINISHED HEAD
Thread Length1.000 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Thread Class2A A
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MILB45912 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
221953 Army Weapons Command Attn Amswe-Ree-S (USA)
Related Parts
5306-00-543-4634SUCCESSOR
BOLT,MACHINE
5306-00-816-5991SUCCESSOR
BOLT,MACHINE
5306-00-905-1672SUCCESSOR
BOLT,MACHINE
5306-01-006-3879SUCCESSOR
BOLT,MACHINE
5306-01-020-6895SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-022-1953?

NSN 5306-00-022-1953 is a Bolt,machine, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-022-1953?

NSN 5306-00-022-1953 has 2 cross-referenced part numbers: MILB45912 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 221953 (Army Weapons Command Attn Amswe-Ree-S).

What NSN replaces 5306-00-022-1953?

There are 5 known substitutes for 5306-00-022-1953: 5306-00-543-4634, 5306-00-816-5991, 5306-00-905-1672 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILB45912?

Key specifications for MILB45912: Fastener Length: 1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN; Minimum Tensile Strength: 95000 POUNDS PER SQUARE INCH LBS; Head Height: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 19 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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