PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3688-4Screw,cap,hexagon Head

Allison Transmission Inc Dba Allison Transmission, Inc · NSN 5305-00-589-5484 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-589-5484 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-589-5484. Primary manufacturer part number: 3688-4.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Class: 3A A
  • Minimum Tensile Strength: 75000 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Thread Series Designator: UNF
  • Material Document and Classification: MIL-S-1222 GRADE 316 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Head Height: 0.188 INCHES NOMINAL IN
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-589-5484, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-589-5484
Primary Part Number3688-4
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAllison Transmission Inc Dba Allison Transmission, Inc
StatusACTIVE
Thread Class3A A
Minimum Tensile Strength75000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.312 INCHES IN
Thread Series DesignatorUNF
Material Document and ClassificationMIL-S-1222 GRADE 316 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Head Height0.188 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Fastener Length1.000 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread Length0.625 INCHES MINIMUM IN
Thread Quantity Per Inch24
Width Between Flats0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Head StyleHEXAGON
Nondefinitive Spec/std Data1 TYPE OR 316 GRADE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
1560-00-110-305936884 INTERCHANGEABLE
Tank,fuel,aircraft
American Fuel Cell and Coated Fabrics Company, Llc
5950-00-436-62822682940 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5925-01-101-5854NUWES-SK-21652 INTERCHANGEABLE
Circuit Breaker,dis
United States Department of the Navy Dba Naval Undersea Warfare Ctr Div
3950-01-387-720236884 INTERCHANGEABLE
Capstan
Allied Systems Company Dba Allied Systems Co
Cross-Reference Index
Part NumberManufacturer
3688-4 PRIMARY Allison Transmission Inc Dba Allison Transmission, Inc (USA)
MIL-DTL-1222J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3688-4 General Motors Corp (USA)
3688-4 General Motors Llc Dba General Motors Llc (USA)
Related Parts
1560-00-110-3059INTERCHANGEABLE
TANK,FUEL,AIRCRAFT
36884
5950-00-436-6282INTERCHANGEABLE
TRANSFORMER,POWER
2682940
5925-01-101-5854INTERCHANGEABLE
CIRCUIT BREAKER,DIS
NUWES-SK-21652
3950-01-387-7202INTERCHANGEABLE
CAPSTAN
36884

Frequently Asked Questions

What is NSN 5305-00-589-5484?

NSN 5305-00-589-5484 is a Screw,cap,hexagon Head, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-589-5484?

NSN 5305-00-589-5484 has 5 cross-referenced part numbers: 3688-4 (Allison Transmission Inc Dba Allison Transmission, Inc), MIL-DTL-1222J (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 3688-4 (General Motors Corp), 3688-4 (General Motors Llc Dba General Motors Llc).

What NSN replaces 5305-00-589-5484?

There are 4 known substitutes for 5305-00-589-5484: 1560-00-110-3059, 5950-00-436-6282, 5925-01-101-5854 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3688-4?

Key specifications for 3688-4: Thread Class: 3A A; Minimum Tensile Strength: 75000 POUNDS PER SQUARE INCH LBS; Nominal Thread Diameter: 0.312 INCHES IN; Thread Series Designator: UNF. 15 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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