PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7748638Bolt,internal Wrenching

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5306-00-783-5183 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-783-5183 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-783-5183. Primary manufacturer part number: 7748638.
Features
  • Bolt,internal Wrenching — FSC 5306
  • Head Diameter: 0.429 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM AND DICHROMATE OVERALL
  • Material: STEEL COMP 4037 OR STEEL COMP 8630 OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 18
  • Fastener Length: 1.500 INCHES NOMINAL IN
  • Thread Length: 0.500 INCHES MINIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4037 or Steel Comp 8630 Overall construction
General Description

The Bolt,internal Wrenching, cataloged under National Stock Number 5306-00-783-5183, is classified within Federal Supply Class 5306 (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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-783-5183
Primary Part Number7748638
Item NameBolt,internal Wrenching
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
Head Diameter0.429 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND DICHROMATE OVERALL
MaterialSTEEL COMP 4037 OR STEEL COMP 8630 OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch18
Fastener Length1.500 INCHES NOMINAL IN
Thread Length0.500 INCHES MINIMUM IN
First Diameter From Head0.220 INCHES NOMINAL IN
Spline Minor Diameter1.000 INCHES NOMINAL IN
Thread Class2A A
Internal Drive StyleHEXAGON
Width Across Flats0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Head Height0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
No Item Name Available
5310-00-186-0970 INTERCHANGEABLE
Washer,key
3120-00-293-582033656 INTERCHANGEABLE
Bearing,sleeve
Prestolite Electric Inc
5330-00-572-208572084 INTERCHANGEABLE
Gasket
L3harris Technologies, Inc Div Space & Airborne Systems
2530-01-013-9539 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
6645-01-122-570500013-0024 INTERCHANGEABLE
Timer,sequential
Asrc Federal Facilities Logistics, Llc
3120-01-297-633372084 INTERCHANGEABLE
Bushing,sleeve
Paccar Winch Inc Dba Paccar Winch Division
5305-01-682-265272084 INTERCHANGEABLE
Thumbscrew
Applied Companies
Cross-Reference Index
Part NumberManufacturer
7748638 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1948536 Delphi Automotive Uk Ltd (GBR)
5306007835183 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
1948536 General Motors Corp Delco Remy Div (USA)
1948536 General Motors Llc Dba General Motors Llc (USA)
1948536 General Motors Corp (USA)
33656 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
72084 Little Giant Crane and Shovel Inc (USA)
1948536 Borgwarner Pds (anderson), L.l.c. (USA)
D32488 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
5306-00-822-2120SUCCESSOR
NO ITEM NAME AVAILABLE
5310-00-186-0970INTERCHANGEABLE
WASHER,KEY
3120-00-293-5820INTERCHANGEABLE
BEARING,SLEEVE
33656
5330-00-572-2085INTERCHANGEABLE
GASKET
72084
2530-01-013-9539INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
6645-01-122-5705INTERCHANGEABLE
TIMER,SEQUENTIAL
00013-0024
3120-01-297-6333INTERCHANGEABLE
BUSHING,SLEEVE
72084
5305-01-682-2652INTERCHANGEABLE
THUMBSCREW
72084

Frequently Asked Questions

What is NSN 5306-00-783-5183?

NSN 5306-00-783-5183 is a Bolt,internal Wrenching, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-783-5183?

NSN 5306-00-783-5183 has 10 cross-referenced part numbers: 7748638 (U S Army Tank Automotive Command Amsta-Im-Mm), 1948536 (Delphi Automotive Uk Ltd), 5306007835183 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), 1948536 (General Motors Corp Delco Remy Div), 1948536 (General Motors Llc Dba General Motors Llc) and 5 more.

What NSN replaces 5306-00-783-5183?

There are 8 known substitutes for 5306-00-783-5183: 5306-00-822-2120, 5310-00-186-0970, 3120-00-293-5820 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7748638?

Key specifications for 7748638: Head Diameter: 0.429 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Surface Treatment: CADMIUM AND DICHROMATE OVERALL; Material: STEEL COMP 4037 OR STEEL COMP 8630 OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-783-5183 still in active supply?

NSN 5306-00-783-5183 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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