PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

120678Screw,cap,hexagon Head

General Motors Corp · NSN 5305-00-012-0678 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-012-0678 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-012-0678. Primary manufacturer part number: 120678.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Minimum Tensile Strength: 69000 POUNDS PER SQUARE INCH LBS
  • Hardness Rating: 100.0 ROCKWELL B MAXIMUM OVERALL
  • Material: STEEL OVERALL
  • Width Between Flats: 0.562 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Thread Series Designator: UNF
  • Thread Class: 2A A
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 5305-00-012-0678, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-012-0678
Primary Part Number120678
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Minimum Tensile Strength69000 POUNDS PER SQUARE INCH LBS
Hardness Rating100.0 ROCKWELL B MAXIMUM OVERALL
MaterialSTEEL OVERALL
Width Between Flats0.562 INCHES NOMINAL IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Thread Series DesignatorUNF
Thread Class2A A
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.375 INCHES IN
Thread Length1.000 INCHES MINIMUM IN
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 2 GRADE
Fastener Length2.000 INCHES NOMINAL IN
Thread Quantity Per Inch24
Head StyleHEXAGON
Head Height0.234 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5305-00-018-1648 INTERCHANGEABLE
Screw,cap,hexagon Head
2810-00-478-9275120678 INTERCHANGEABLE
Plug-Gov Dr Gr to S
Curtiss-Wright Controls, Inc. Div Actuation Division
3020-01-305-2316120678 INTERCHANGEABLE
Gear,spur
Itw Food Equipment Group Llc Dba Hobart Service
Cross-Reference Index
Part NumberManufacturer
120678 General Motors Corp (USA)
FFS85TYPE2STYLE10P Federal Specifications Promulgated by General Services Administration Washington DC (USA)
120678 General Motors Llc Dba General Motors Llc (USA)
120678 Diamond Reo Truck Co (USA)
BCVX2FW1 CAGE 00000
Related Parts
5305-00-018-1648INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
2810-00-478-9275INTERCHANGEABLE
PLUG-GOV DR GR TO S
120678
3020-01-305-2316INTERCHANGEABLE
GEAR,SPUR
120678

Frequently Asked Questions

What is NSN 5305-00-012-0678?

NSN 5305-00-012-0678 is a Screw,cap,hexagon Head, manufactured by General Motors Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-012-0678?

NSN 5305-00-012-0678 has 5 cross-referenced part numbers: 120678 (General Motors Corp), FFS85TYPE2STYLE10P (Federal Specifications Promulgated by General Services Administration Washington DC), 120678 (General Motors Llc Dba General Motors Llc), 120678 (Diamond Reo Truck Co), BCVX2FW1.

What NSN replaces 5305-00-012-0678?

There are 3 known substitutes for 5305-00-012-0678: 5305-00-018-1648, 2810-00-478-9275, 3020-01-305-2316. Verify interchangeability with system specifications before substitution.

What are the specifications of 120678?

Key specifications for 120678: Minimum Tensile Strength: 69000 POUNDS PER SQUARE INCH LBS; Hardness Rating: 100.0 ROCKWELL B MAXIMUM OVERALL; Material: STEEL OVERALL; Width Between Flats: 0.562 INCHES NOMINAL IN. 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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