PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43178Screw,cap,socket Head

Fastenal Company Dba Fastenal Co · NSN 5305-01-551-7301 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-551-7301 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-551-7301. Primary manufacturer part number: 43178.
Features
  • Screw,cap,socket Head — FSC 5305
  • Material: STEEL OVERALL
  • Head Style: FLAT COUNTERSUNK
  • 3 verified cross-references
  • Primary manufacturer: Fastenal Company Dba Fastenal Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-551-7301, is classified within Federal Supply Class 5305 (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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN5305-01-551-7301
Primary Part Number43178
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
MaterialSTEEL OVERALL
Head StyleFLAT COUNTERSUNK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-207-89753006-001 INTERCHANGEABLE
Seal,plain Encased
Cooper Machinery Services Llc
5905-01-048-74066096868-1 INTERCHANGEABLE
Resistor Network,fixed,film
Lockheed Martin Corporation Div Rotary and Mission Systems
5340-01-266-863143178 INTERCHANGEABLE
Plate,retaining,seal
Dana Commercial Vehicle Products, Llc
5310-01-373-728343178 INTERCHANGEABLE
Washer,flat
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5330-01-594-6224CB28297-001 INTERCHANGEABLE
Seal,plain
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
43178 Fastenal Company Dba Fastenal Co (USA)
3006001 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
43178 Barnes Group Inc. Dba Barnes Distribution (USA)
Related Parts
5330-00-207-8975INTERCHANGEABLE
SEAL,PLAIN ENCASED
3006-001
5905-01-048-7406INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
6096868-1
5340-01-266-8631INTERCHANGEABLE
PLATE,RETAINING,SEAL
43178
5310-01-373-7283INTERCHANGEABLE
WASHER,FLAT
43178
5330-01-594-6224INTERCHANGEABLE
SEAL,PLAIN
CB28297-001

Frequently Asked Questions

What is NSN 5305-01-551-7301?

NSN 5305-01-551-7301 is a Screw,cap,socket Head, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-551-7301?

NSN 5305-01-551-7301 has 3 cross-referenced part numbers: 43178 (Fastenal Company Dba Fastenal Co), 3006001 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp), 43178 (Barnes Group Inc. Dba Barnes Distribution).

What NSN replaces 5305-01-551-7301?

There are 5 known substitutes for 5305-01-551-7301: 5330-00-207-8975, 5905-01-048-7406, 5340-01-266-8631 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43178?

Key specifications for 43178: End Item Identification: 2320-01-529-2251 TRUCK, BOMB SERVICE; Material: STEEL OVERALL; Part Name Assigned by Controlling Agency: M12 X 1.75 X 35MM METRIC FLAT HEAD SOCKET HEAD CAP SCREW MM; Head Style: FLAT COUNTERSUNK. 4 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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