PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S138Bolt,machine

Bae Systems Land & Armaments L.p. · NSN 5306-00-292-5937 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-292-5937 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-292-5937. Primary manufacturer part number: S138.
Features
  • Bolt,machine — FSC 5306
  • Thread Series Designator: UNF
  • Surface Treatment: CADMIUM OVERALL
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Thread Length: 1.000 INCHES MINIMUM IN
  • Thread Quantity Per Inch: 20
  • Width Between Flats: 0.750 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1015 or Steel Comp 1018 or Steel Comp 1020 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-292-5937, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 14 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-292-5937
Primary Part NumberS138
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerBae Systems Land & Armaments L.p.
StatusACTIVE
Thread Series DesignatorUNF
Surface TreatmentCADMIUM OVERALL
Fastener Length1.250 INCHES NOMINAL IN
Nominal Thread Diameter0.500 INCHES IN
Thread Length1.000 INCHES MINIMUM IN
Thread Quantity Per Inch20
Width Between Flats0.750 INCHES NOMINAL IN
Head StyleHEXAGON
Head Height0.375 INCHES NOMINAL IN
Thread Class3A A
Thread DirectionRIGHT-HAND
Features ProvidedFINISHED HEAD
MaterialSTEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
Material Document and ClassificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
Rectifier,metallic
5120-00-293-0093 INTERCHANGEABLE
Socket,socket Wrench
3455-00-476-0880 INTERCHANGEABLE
Cutter,milling,end
5935-00-839-6714425173-01 INTERCHANGEABLE
Backshell,electrical Connector
Bae Systems Controls Inc
5935-01-020-98596060-16-083-15 INTERCHANGEABLE
Backshell,electrical Connector
Safran Electrical Components Usa, Inc Div Safran Electrical Components Usa
5330-01-177-9779 INTERCHANGEABLE
Packing with Retainer
Cross-Reference Index
Part NumberManufacturer
S138 PRIMARY Bae Systems Land & Armaments L.p. (USA)
S138 Amz Alabama Inc. (USA)
Related Parts
6130-00-500-4187SUCCESSOR
RECTIFIER,METALLIC
5120-00-293-0093INTERCHANGEABLE
SOCKET,SOCKET WRENCH
3455-00-476-0880INTERCHANGEABLE
CUTTER,MILLING,END
5935-00-839-6714INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
425173-01
5935-01-020-9859INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
6060-16-083-15
5330-01-177-9779INTERCHANGEABLE
PACKING WITH RETAINER

Frequently Asked Questions

What is NSN 5306-00-292-5937?

NSN 5306-00-292-5937 is a Bolt,machine, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-292-5937?

NSN 5306-00-292-5937 has 2 cross-referenced part numbers: S138 (Bae Systems Land & Armaments L.p.), S138 (Amz Alabama Inc.).

What NSN replaces 5306-00-292-5937?

There are 6 known substitutes for 5306-00-292-5937: 6130-00-500-4187, 5120-00-293-0093, 3455-00-476-0880 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S138?

Key specifications for S138: Thread Series Designator: UNF; Surface Treatment: CADMIUM OVERALL; Fastener Length: 1.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.500 INCHES IN. 14 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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