PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5305-983-6656Screw,cap,socket Head

E.c.a Etablissement Centrald'approvisionnement Des Forces Armee · NSN 5305-00-983-6656 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-983-6656 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-983-6656. Primary manufacturer part number: 5305-983-6656.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Series Designator: UNF
  • Fastener Length: 1.960 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
  • Head Diameter: 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Nondefinitive Spec/std Data: 6 TYPE
  • Minimum Yield Strength: 130000 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Diameter: 0.190 INCHES IN
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 5305-00-983-6656, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is E.c.a Etablissement Centrald'approvisionnement Des Forces Armee. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-983-6656
Primary Part Number5305-983-6656
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerE.c.a Etablissement Centrald'approvisionnement Des Forces Armee
StatusCANCELLED
Thread Series DesignatorUNF
Fastener Length1.960 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
Head Diameter0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std Data6 TYPE
Minimum Yield Strength130000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.190 INCHES IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
MaterialSTEEL OVERALL
Thread DirectionRIGHT-HAND
Head Height0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Head StyleFLAT CHAMFER
Width Across Flats0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
Hardness Rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
Internal Drive StyleHEXAGON
Minimum Tensile Strength160000 POUNDS PER SQUARE INCH LBS
Thread Class3A A
Thread Length1.085 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
6240-00-143-307050ARS115V INTERCHANGEABLE
Lamp,incandescent
Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company
4730-00-477-7937P401-125-060 INTERCHANGEABLE
Restrictor,fluid Flow
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
4730-00-477-7938P401-150-060 INTERCHANGEABLE
Restrictor,fluid Flow
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
4730-01-257-0899P401-175-982 INTERCHANGEABLE
Restrictor,fluid Flow
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
4730-01-257-4988P401-200-1290 INTERCHANGEABLE
Restrictor,fluid Flow
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
4730-01-257-8930P401-075-435 INTERCHANGEABLE
Restrictor,fluid Flow
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
1990-01-280-3692P-401 INTERCHANGEABLE
Ferry,causeway
Naval Facilities Engineering Command
5130-01-387-7451401 INTERCHANGEABLE
Extractor Set,screw,powered
Alden Corporation Dba Drill-Out
4820-01-510-8724P-401 INTERCHANGEABLE
Valve,vent
Circor Aerospace, Inc. Dba Circor Aerospace Inc
Cross-Reference Index
Part NumberManufacturer
5305-983-6656 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
MS16998-35 Psa Peugeot-Citroen Espana, Sa (ESP)
870918-00 Defense Reduction Agency (USA)
MS16998-35 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FF-S-86 REVISION C Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5305009836656 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
FFS86 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
NAS1351-3-32P National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
P401 Weldon Tool Co the (USA)
5305PL0720588 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
6240-00-143-3070INTERCHANGEABLE
LAMP,INCANDESCENT
50ARS115V
4730-00-477-7937INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
P401-125-060
4730-00-477-7938INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
P401-150-060
4730-01-257-0899INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
P401-175-982
4730-01-257-4988INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
P401-200-1290
4730-01-257-8930INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
P401-075-435
1990-01-280-3692INTERCHANGEABLE
FERRY,CAUSEWAY
P-401
5130-01-387-7451INTERCHANGEABLE
EXTRACTOR SET,SCREW,POWERED
401
4820-01-510-8724INTERCHANGEABLE
VALVE,VENT
P-401

Frequently Asked Questions

What is NSN 5305-00-983-6656?

NSN 5305-00-983-6656 is a Screw,cap,socket Head, manufactured by E.c.a Etablissement Centrald'approvisionnement Des Forces Armee, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-983-6656?

NSN 5305-00-983-6656 has 10 cross-referenced part numbers: 5305-983-6656 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), MS16998-35 (Psa Peugeot-Citroen Espana, Sa), 870918-00 (Defense Reduction Agency), MS16998-35 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FF-S-86 REVISION C (Federal Specifications Promulgated by General Services Administration Washington DC) and 5 more.

What NSN replaces 5305-00-983-6656?

There are 9 known substitutes for 5305-00-983-6656: 6240-00-143-3070, 4730-00-477-7937, 4730-00-477-7938 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5305-983-6656?

Key specifications for 5305-983-6656: Thread Series Designator: UNF; Fastener Length: 1.960 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN; Head Diameter: 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-983-6656 still in active supply?

NSN 5305-00-983-6656 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com