PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

850988Screw,cap,socket Head

Honeywell International, Inc Div Aerospace-Tucson · NSN 5305-00-753-9000 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-753-9000 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-753-9000. Primary manufacturer part number: 850988.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Head Diameter: 0.312 INCHES NOMINAL IN
  • Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Length: 0.625 INCHES MINIMUM IN
  • Material: STEEL OVERALL
  • Head Style: FILLISTER
  • Width Across Flats: 0.156 INCHES NOMINAL 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 5305-00-753-9000, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 19 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-753-9000
Primary Part Number850988
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerHoneywell International, Inc Div Aerospace-Tucson
StatusACTIVE
Thread DirectionRIGHT-HAND
Head Diameter0.312 INCHES NOMINAL IN
Hardness Rating38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
Thread Length0.625 INCHES MINIMUM IN
MaterialSTEEL OVERALL
Head StyleFILLISTER
Width Across Flats0.156 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Hole Configuration StyleROUND
Thread Quantity Per Inch24
Head Height0.188 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Hole TypeDRILLED
Thread Class2A A
Fastener Length1.500 INCHES NOMINAL IN
Hole Quantity2
Nominal Thread Diameter0.190 INCHES IN
Hole Diameter0.046 INCHES NOMINAL IN
Internal Drive StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2520-00-358-38751201 INTERCHANGEABLE
Cover Assembly,clutch
Sachs-Boge of America
Cross-Reference Index
Part NumberManufacturer
850988 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
850988 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
850988 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
Related Parts
2520-00-358-3875INTERCHANGEABLE
COVER ASSEMBLY,CLUTCH
1201

Frequently Asked Questions

What is NSN 5305-00-753-9000?

NSN 5305-00-753-9000 is a Screw,cap,socket Head, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-753-9000?

NSN 5305-00-753-9000 has 3 cross-referenced part numbers: 850988 (Honeywell International, Inc Div Aerospace-Tucson), 850988 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 850988 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems).

What NSN replaces 5305-00-753-9000?

There is 1 known substitute for 5305-00-753-9000: 2520-00-358-3875. Verify interchangeability with system specifications before substitution.

What are the specifications of 850988?

Key specifications for 850988: Thread Direction: RIGHT-HAND; Head Diameter: 0.312 INCHES NOMINAL IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL; Thread Length: 0.625 INCHES MINIMUM IN. 19 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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