PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19938Bolt,machine

Fastenal Company Dba Fastenal Co · NSN 5306-01-588-1050 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-01-588-1050 — this item is cataloged by the U.S. Government under National Stock Number 5306-01-588-1050. Primary manufacturer part number: 19938.
Features
  • Bolt,machine — FSC 5306
  • Material: STEEL OVERALL
  • Surface Treatment: ZINC OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Surface Treatment Document and Classification: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Head Height: 0.307 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
  • Head Style: HEXAGON
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 5306-01-588-1050, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5306-01-588-1050
Primary Part Number19938
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
MaterialSTEEL OVERALL
Surface TreatmentZINC OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Diameter0.375 INCHES IN
Surface Treatment Document and ClassificationASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Head Height0.307 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
Head StyleHEXAGON
Thread Class2A A
Thread DirectionRIGHT-HAND
Fastener Length2.690 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN
Thread Length2.690 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Thread Quantity Per Inch16
Extended Washer Diameter0.771 INCHES MINIMUM AND 0.793 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-517-56367076 INTERCHANGEABLE
Plug,pipe
Eaton Aerospace, Llc Dba Jackson South
5365-00-599-4760 INTERCHANGEABLE
Shim
5985-00-782-7634199-38 INTERCHANGEABLE
Antenna Subassembly
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
1660-00-874-7514 INTERCHANGEABLE
Valve
2815-01-118-302168383 INTERCHANGEABLE
Piston,internal Combustion Engin
Perkins Engines Inc
Cross-Reference Index
Part NumberManufacturer
19938 PRIMARY Fastenal Company Dba Fastenal Co (USA)
12759-00988 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
4730-00-517-5636INTERCHANGEABLE
PLUG,PIPE
7076
5365-00-599-4760INTERCHANGEABLE
SHIM
5985-00-782-7634INTERCHANGEABLE
ANTENNA SUBASSEMBLY
199-38
1660-00-874-7514INTERCHANGEABLE
VALVE
2815-01-118-3021INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
68383

Frequently Asked Questions

What is NSN 5306-01-588-1050?

NSN 5306-01-588-1050 is a Bolt,machine, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-01-588-1050?

NSN 5306-01-588-1050 has 2 cross-referenced part numbers: 19938 (Fastenal Company Dba Fastenal Co), 12759-00988 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5306-01-588-1050?

There are 5 known substitutes for 5306-01-588-1050: 4730-00-517-5636, 5365-00-599-4760, 5985-00-782-7634 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19938?

Key specifications for 19938: Material: STEEL OVERALL; Surface Treatment: ZINC OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Part Name Assigned by Controlling Agency: 3/8-16 X 2-3/4 CASE HARDENED ZINC FLANGE BOLT. 17 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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