PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35355-3Bolt,machine

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5306-00-550-3686 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-550-3686 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-550-3686. Primary manufacturer part number: MS35355-3.
Features
  • Bolt,machine — FSC 5306
  • Surface Treatment Document and Classification: SAE/AMS QQ-P-416 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OR ASTM B633 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Hardness Rating: 95.0 ROCKWELL B MAXIMUM OVERALL
  • Thread Class: 2A A
  • Features Provided: UNFINISHED HEAD
  • Head Style: SQUARE
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-550-3686, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-550-3686
Primary Part NumberMS35355-3
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Surface Treatment Document and ClassificationSAE/AMS QQ-P-416 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OR ASTM B633 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Fastener Length1.250 INCHES NOMINAL IN
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Thread Class2A A
Features ProvidedUNFINISHED HEAD
Head StyleSQUARE
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Minimum Tensile Strength60000 POUNDS PER SQUARE INCH LBS
Thread Length0.750 INCHES MINIMUM IN
Material Document and ClassificationASTM A307 GR1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch20
Width Between Flats0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Head Height0.150 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
Bolt,machine
5306-00-042-6922426922 SUCCESSOR
Bolt,machine
General Motors Llc Dba General Motors Llc
Bolt,machine
Bolt,machine
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MS35355-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B18.2.1 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
ASME B18.2.1 The American Society of Mechanical Engineers (USA)
FF-B-575 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
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5306-00-019-1857SUCCESSOR
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5306-00-042-6920SUCCESSOR
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5306-00-042-6922SUCCESSOR
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426922
5306-00-042-6923SUCCESSOR
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5306-00-042-6934SUCCESSOR
BOLT,MACHINE
5306-00-042-6936SUCCESSOR
BOLT,MACHINE
5306-00-042-6937SUCCESSOR
BOLT,MACHINE
426937
5306-00-042-6938SUCCESSOR
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5306-00-550-3686?

NSN 5306-00-550-3686 is a Bolt,machine, manufactured by Military Standards Promulgated by Military Departments 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 5306-00-550-3686?

NSN 5306-00-550-3686 has 4 cross-referenced part numbers: MS35355-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), B18.2.1 (American National Standards Institute Incorporated Dba American National Standards Institute), ASME B18.2.1 (The American Society of Mechanical Engineers), FF-B-575 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-550-3686?

There are 12 known substitutes for 5306-00-550-3686: 5306-00-011-1195, 5306-00-013-1303, 5306-00-018-6682 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35355-3?

Key specifications for MS35355-3: Surface Treatment Document and Classification: SAE/AMS QQ-P-416 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OR ASTM B633 TY2CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Fastener Length: 1.250 INCHES NOMINAL IN; Hardness Rating: 95.0 ROCKWELL B MAXIMUM OVERALL; Thread Class: 2A A. 16 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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