PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4298578Screw,cap,hexagon Head

Oshkosh Defense Llc · NSN 5305-01-662-2057 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-662-2057 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-662-2057. Primary manufacturer part number: 4298578.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • 2 verified cross-references
  • Primary manufacturer: Oshkosh Defense Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-662-2057, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Oshkosh Defense Llc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameScrew,cap,hexagon Head
FSC / FSG5305 — No Item Name Available (FSG 53)
ManufacturersFastenal Company Dba Fastenal Co (CAGE 0Y3H3); Oshkosh Defense Llc (CAGE 75Q65)
Technical Specifications
ParameterValue
NSN5305-01-662-2057
Primary Part Number4298578
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5342-00-131-2702 INTERCHANGEABLE
Mount,resilient,weapon System
5360-00-246-69334B8313 INTERCHANGEABLE
Spring,helical,compression
Caterpillar Inc Div Caterpillar Defense
2520-01-084-32513-0188 INTERCHANGEABLE
Journal and Bearing
Neapco Inc
5325-01-277-616938618 INTERCHANGEABLE
Ring,retaining
Leroi International Inc Dba Compair Leroi
Cross-Reference Index
Part NumberManufacturer
38618 Fastenal Company Dba Fastenal Co (USA)
4298578 PRIMARY Oshkosh Defense Llc (USA)
Related Parts
5342-00-131-2702INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
5360-00-246-6933INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4B8313
2520-01-084-3251INTERCHANGEABLE
JOURNAL AND BEARING
3-0188
5325-01-277-6169INTERCHANGEABLE
RING,RETAINING
38618

Frequently Asked Questions

What is NSN 5305-01-662-2057?

NSN 5305-01-662-2057 is a Screw,cap,hexagon Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-662-2057?

NSN 5305-01-662-2057 has 2 cross-referenced part numbers: 38618 (Fastenal Company Dba Fastenal Co), 4298578 (Oshkosh Defense Llc).

What NSN replaces 5305-01-662-2057?

There are 4 known substitutes for 5305-01-662-2057: 5342-00-131-2702, 5360-00-246-6933, 2520-01-084-3251 and 1 more. Verify interchangeability with system specifications before substitution.

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