PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

375089Bolt,externally Relieved Body

Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix · NSN 5306-00-660-2091 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-660-2091 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-660-2091. Primary manufacturer part number: 375089.
Features
  • Bolt,externally Relieved Body — FSC 5306
  • Thread Length: 0.325 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Head Height: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Width Between Flats: 0.312 INCHES NOMINAL IN
  • Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Series Designator: UNF
  • Externally Relieved Body Diameter Quantity: 2
  • Material: STEEL COMP 4130 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4130 Overall construction
General Description

The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-660-2091, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix. Government technical data includes 18 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-660-2091
Primary Part Number375089
Item NameBolt,externally Relieved Body
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
StatusACTIVE
Thread Length0.325 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Head Height0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Width Between Flats0.312 INCHES NOMINAL IN
Hardness Rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNF
Externally Relieved Body Diameter Quantity2
MaterialSTEEL COMP 4130 OVERALL
Surface TreatmentCADMIUM OVERALL
Thread Class3A A
Nominal Thread Diameter0.190 INCHES IN
Head StyleHEXAGON
Distance From Largest Bearing Surface of Head to End of Second Diameter0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN
Second Diameter From Head0.133 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
First Diameter From Head0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Fastener Length0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN
Distance From Largest Bearing Surface of Head to End of First Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6240-00-577-8455 INTERCHANGEABLE
Lamp,incandescent
5310-00-685-1744119FW428 INTERCHANGEABLE
Nut,self-Locking,extended Washer
Sps Technologies, Llc Dba PB Fasteners
Cross-Reference Index
Part NumberManufacturer
375089 PRIMARY Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
375089 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
375089 Honeywell International Inc. Div Aerospace - Torrance (USA)
Related Parts
6240-00-577-8455INTERCHANGEABLE
LAMP,INCANDESCENT
5310-00-685-1744INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
119FW428

Frequently Asked Questions

What is NSN 5306-00-660-2091?

NSN 5306-00-660-2091 is a Bolt,externally Relieved Body, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-660-2091?

NSN 5306-00-660-2091 has 3 cross-referenced part numbers: 375089 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 375089 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), 375089 (Honeywell International Inc. Div Aerospace - Torrance).

What NSN replaces 5306-00-660-2091?

There are 2 known substitutes for 5306-00-660-2091: 6240-00-577-8455, 5310-00-685-1744. Verify interchangeability with system specifications before substitution.

What are the specifications of 375089?

Key specifications for 375089: Thread Length: 0.325 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Head Height: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Width Between Flats: 0.312 INCHES NOMINAL IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 18 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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