PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

218751Screw,cap,socket Head

Woodward, Inc. Div Fuel Systems and Controls · NSN 5305-00-143-3359 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-143-3359 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-143-3359. Primary manufacturer part number: 218751.
Features
  • Screw,cap,socket Head — FSC 5305
  • Internal Drive Style: HEXAGON
  • Head Diameter: 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
  • Thread Class: 3A A
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL COMP 410 OR STEEL COMP 416 OVERALL
  • Width Across Flats: 0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Head Height: 0.152 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 410 or Steel Comp 416 Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-143-3359, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-143-3359
Primary Part Number218751
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerWoodward, Inc. Div Fuel Systems and Controls
StatusACTIVE
Internal Drive StyleHEXAGON
Head Diameter0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
Thread Class3A A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL COMP 410 OR STEEL COMP 416 OVERALL
Width Across Flats0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Head Height0.152 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Nominal Thread Diameter0.164 INCHES IN
Thread DirectionRIGHT-HAND
Thread Length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Head StyleFLAT CHAMFER
Thread Quantity Per Inch32
Fastener Length0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4520-00-127-844021875-1 INTERCHANGEABLE
Heater,tubular
Sp Industries, Inc. Dba Hotpack Div Hull Division
5935-00-137-4668 INTERCHANGEABLE
Cover,electrical Connector
5310-01-044-2274M45938/1-5C INTERCHANGEABLE
Nut,plain,clinch
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5930-01-439-9719SXRO637 IT8 INTERCHANGEABLE
Switch,thermostatic
Natural Gas Solutions North America Llc Div Industrial Products Group
Cross-Reference Index
Part NumberManufacturer
218751 PRIMARY Woodward, Inc. Div Fuel Systems and Controls (USA)
Related Parts
4520-00-127-8440INTERCHANGEABLE
HEATER,TUBULAR
21875-1
5935-00-137-4668INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5310-01-044-2274INTERCHANGEABLE
NUT,PLAIN,CLINCH
M45938/1-5C
5930-01-439-9719INTERCHANGEABLE
SWITCH,THERMOSTATIC
SXRO637 IT8

Frequently Asked Questions

What is NSN 5305-00-143-3359?

NSN 5305-00-143-3359 is a Screw,cap,socket Head, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-143-3359?

NSN 5305-00-143-3359 has 1 cross-referenced part number: 218751 (Woodward, Inc. Div Fuel Systems and Controls).

What NSN replaces 5305-00-143-3359?

There are 4 known substitutes for 5305-00-143-3359: 4520-00-127-8440, 5935-00-137-4668, 5310-01-044-2274 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 218751?

Key specifications for 218751: Internal Drive Style: HEXAGON; Head Diameter: 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN; Thread Class: 3A A; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 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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