PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1352C4-20PScrew,cap,socket Head

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-01-107-7994 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-107-7994 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-107-7994. Primary manufacturer part number: NAS1352C4-20P.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Class: 3A A
  • Width Across Flats: 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
  • Thread Length: 1.000 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OVERALL
  • Material Document and Classification: FF-S-86 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 304 or Steel Comp 305 or Steel Comp 316 or Steel Comp 384 Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-107-7994, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 17 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-107-7994
Primary Part NumberNAS1352C4-20P
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Thread Class3A A
Width Across Flats0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Thread Length1.000 INCHES NOMINAL IN
Nominal Thread Diameter0.250 INCHES IN
MaterialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OVERALL
Material Document and ClassificationFF-S-86 FED SPEC ALL MATERIAL RESPONSES OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series DesignatorUNRC
Hardness Rating80.0 ROCKWELL B NOMINAL OVERALL
Thread DirectionRIGHT-HAND
Head Diameter0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Internal Drive StyleHEXAGON
Fastener Length1.250 INCHES NOMINAL IN
Head StyleFILLISTER
Thread Quantity Per Inch20
Surface TreatmentCADMIUM OVERALL
Head Height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5305-00-080-4480 INTERCHANGEABLE
Screw,cap,socket Head
5305-00-227-100312F1007-293 INTERCHANGEABLE
Screw,cap,socket Head
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-273-555712Z1196-14 INTERCHANGEABLE
Screw,cap,socket Head
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-273-558112Z1007-217 INTERCHANGEABLE
Screw,cap,socket Head
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-806-2582 INTERCHANGEABLE
Screw,cap,socket Head
5305-00-865-165660-16-1362 INTERCHANGEABLE
Screw,cap,socket Head
Electric Boat Corporation Div General Dynamics Electric Boat
5305-00-865-165960-16-1672 INTERCHANGEABLE
Screw,cap,socket Head
Electric Boat Corporation Div General Dynamics Electric Boat
5305-00-866-310460-16-1670A INTERCHANGEABLE
Screw,cap,socket Head
Electric Boat Corporation Div General Dynamics Electric Boat
5305-00-952-0343 INTERCHANGEABLE
Screw,cap,socket Head
5305-00-995-1539 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
NAS1352C4-20P PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
20098-4C20C PRIMARY Sps Technologies, Llc Dba PB Fasteners (USA)
FF-S-86TYPE 6 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-080-4480INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-00-227-1003INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12F1007-293
5305-00-273-5557INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12Z1196-14
5305-00-273-5581INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12Z1007-217
5305-00-806-2582INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-00-865-1656INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
60-16-1362
5305-00-865-1659INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
60-16-1672
5305-00-866-3104INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
60-16-1670A
5305-00-952-0343INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-00-995-1539INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-265-2069INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-01-107-7994?

NSN 5305-01-107-7994 is a Screw,cap,socket Head, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-107-7994?

NSN 5305-01-107-7994 has 3 cross-referenced part numbers: NAS1352C4-20P (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 20098-4C20C (Sps Technologies, Llc Dba PB Fasteners), FF-S-86TYPE 6 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-01-107-7994?

There are 11 known substitutes for 5305-01-107-7994: 5305-00-080-4480, 5305-00-227-1003, 5305-00-273-5557 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1352C4-20P?

Key specifications for NAS1352C4-20P: Thread Class: 3A A; Width Across Flats: 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Thread Length: 1.000 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 17 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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