PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

312109Setscrew

Caterpillar Inc Div Caterpillar Defense · NSN 5305-01-162-5708 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-162-5708 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-162-5708. Primary manufacturer part number: 312109.
Features
  • Setscrew — FSC 5305
  • Head Style: HEADLESS (SETSCREW)
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Point Style: FLAT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Width Across Flats: 0.190 INCHES NOMINAL IN
  • Internal Drive Style: HEXAGON
Applications
  • Applications requiring Steel Comp 1013 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1017 or Steel Comp 1018 or Steel Comp 1019 or Steel Comp 1020 or Steel Comp 1021 or Steel Comp 1022 or Steel Comp 1023 or Steel Comp 1524 or Steel Comp 1025 or Steel Comp 1026 or Steel Comp 1527 or Steel Comp 1029 or Steel Comp 1030 or Steel Comp 1033 or Steel Comp 1034 or Steel Comp 1035 or Steel Comp 1536 or Steel Comp 1037 or Steel Comp 1038 or Steel Comp 1039 or Steel Comp 1040 or Steel Comp 1541 Overall construction
General Description

The Setscrew, cataloged under National Stock Number 5305-01-162-5708, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-162-5708
Primary Part Number312109
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Head StyleHEADLESS (SETSCREW)
Thread DirectionRIGHT-HAND
Fastener Length0.500 INCHES NOMINAL IN
Point StyleFLAT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Width Across Flats0.190 INCHES NOMINAL IN
Internal Drive StyleHEXAGON
Material Document and ClassificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
Locking FeaturePELLET OR STRIP THREADS
MaterialSTEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OVERALL
Thread Class3A A
Thread Quantity Per Inch16
Nominal Thread Diameter0.375 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5985-01-163-6221 INTERCHANGEABLE
Attenuator,fixed
6650-01-164-7651 INTERCHANGEABLE
Magnifier
Cross-Reference Index
Part NumberManufacturer
312109 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5985-01-163-6221INTERCHANGEABLE
ATTENUATOR,FIXED
6650-01-164-7651INTERCHANGEABLE
MAGNIFIER

Frequently Asked Questions

What is NSN 5305-01-162-5708?

NSN 5305-01-162-5708 is a Setscrew, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-162-5708?

NSN 5305-01-162-5708 has 1 cross-referenced part number: 312109 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5305-01-162-5708?

There are 2 known substitutes for 5305-01-162-5708: 5985-01-163-6221, 6650-01-164-7651. Verify interchangeability with system specifications before substitution.

What are the specifications of 312109?

Key specifications for 312109: Head Style: HEADLESS (SETSCREW); Thread Direction: RIGHT-HAND; Fastener Length: 0.500 INCHES NOMINAL IN; Point Style: FLAT. 13 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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