PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FT1031-4Screw Assembly,panel

Fastener Technology Corp · NSN 5305-01-434-6593 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-434-6593 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-434-6593. Primary manufacturer part number: FT1031-4.
Features
  • Screw Assembly,panel — FSC 5305
  • Material Accommodated Thickness: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
  • Material: STEEL CORROSION RESISTING SECONDARY WASHER
  • Surface Treatment: PASSIVATE PRIMARY WASHER
  • Surface Treatment: PASSIVATE FASTENER
  • Material Document and Classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Secondary Washer construction
General Description

The Screw Assembly,panel, cataloged under National Stock Number 5305-01-434-6593, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastener Technology Corp. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-434-6593
Primary Part NumberFT1031-4
Item NameScrew Assembly,panel
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastener Technology Corp
StatusACTIVE
Material Accommodated Thickness0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Material Document and ClassificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
MaterialSTEEL CORROSION RESISTING SECONDARY WASHER
Surface TreatmentPASSIVATE PRIMARY WASHER
Surface TreatmentPASSIVATE FASTENER
Material Document and ClassificationMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER
Material Document and ClassificationQQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING
Thread Series DesignatorUNF
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
Surface TreatmentPASSIVATE SPRING
Surface TreatmentANODIZE STAND-OFF
MaterialSTEEL COMP 301 PRIMARY WASHER
Material Document and ClassificationASTM A493 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
Thread Class3A A
Head StyleHEXAGON
Nominal Thread Diameter0.250 INCHES IN
Internal Drive StyleHEXAGON
Head Height0.306 INCHES NOMINAL IN
Fastener Length0.901 INCHES NOMINAL IN
Width Across Flats0.140 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF
MaterialALUMINUM ALLOY 6061 STAND-OFF
MaterialSTEEL COMP 302 FASTENER
Thread Quantity Per Inch28
Thread DirectionRIGHT-HAND
MaterialSTEEL COMP 302 SPRING
Thread Length0.250 INCHES NOMINAL IN
Width Between Flats0.371 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-534-016910A9941 INTERCHANGEABLE
Seal Ring,metal
Napco International Llc Dba Napco International Inc
Cross-Reference Index
Part NumberManufacturer
1395PD7777-008 Bae Systems Information and Electronic Systems Integration Inc. (USA)
FT1031-4 PRIMARY Fastener Technology Corp (USA)
Related Parts
5330-00-534-0169INTERCHANGEABLE
SEAL RING,METAL
10A9941

Frequently Asked Questions

What is NSN 5305-01-434-6593?

NSN 5305-01-434-6593 is a Screw Assembly,panel, manufactured by Fastener Technology Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-434-6593?

NSN 5305-01-434-6593 has 2 cross-referenced part numbers: 1395PD7777-008 (Bae Systems Information and Electronic Systems Integration Inc.), FT1031-4 (Fastener Technology Corp).

What NSN replaces 5305-01-434-6593?

There is 1 known substitute for 5305-01-434-6593: 5330-00-534-0169. Verify interchangeability with system specifications before substitution.

What are the specifications of FT1031-4?

Key specifications for FT1031-4: Material Accommodated Thickness: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING; Material: STEEL CORROSION RESISTING SECONDARY WASHER. 30 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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