PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23311Bolt,machine

Hamilton Sundstrand Corporation · NSN 5306-00-993-0500 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-993-0500 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-993-0500. Primary manufacturer part number: 23311.
Features
  • Bolt,machine — FSC 5306
  • Head Style: DISHED HEXAGON
  • Head Height: 0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
  • Thread Length: 0.375 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN
  • Fastener Length: 0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Hole Quantity: 6
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 or Steel Comp 8740 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 4130 or Steel Comp 4037 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-993-0500, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-993-0500
Primary Part Number23311
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusCANCELLED
Head StyleDISHED HEXAGON
Head Height0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
Thread Length0.375 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN
Fastener Length0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Hole Quantity6
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Width Between Flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
Grip Length0.046 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
Hole TypeDRILLED
Thread Class3A A
Features ProvidedFINISHED HEAD
Hole Diameter0.070 INCHES NOMINAL IN
Thread Quantity Per Inch28
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
Hole Configuration StyleHEXAGON LONGITUDINAL HOLE
Thread Series DesignatorUNF
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Material Document and ClassificationMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
Nominal Thread Diameter0.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5306-00-156-2656 INTERCHANGEABLE
Bolt,machine
6685-00-514-562523311 INTERCHANGEABLE
Indicator,humidity,plug
Protekair
6685-00-678-506923332 INTERCHANGEABLE
Indicator,humidity,plug
Protekair
2530-01-268-02591045Z1351 INTERCHANGEABLE
Rebushing Kit,torque Rod,vehicul
Morris Material Handling, Inc.
5130-01-329-6479 INTERCHANGEABLE
Brush,wire,rotary End
5330-01-362-542523311 INTERCHANGEABLE
Gasket
Barksdale, Inc
2540-01-593-4514 INTERCHANGEABLE
Latch,door,vehicular
3940-01-716-923723311 INTERCHANGEABLE
Adapter,hoisting
Jergens Inc Div Tooling Components Division
Cross-Reference Index
Part NumberManufacturer
23311 Hamilton Sundstrand Corporation (USA)
AN74-3 Aeronautical Standards Group Dept of Navy and Air Force (USA)
MS20073-04-03 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
TF36502 Eaton Corp Dba Eaton Aerospace Jackson (USA)
Related Parts
5306-00-156-2656INTERCHANGEABLE
BOLT,MACHINE
6685-00-514-5625INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
23311
6685-00-678-5069INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
23332
2530-01-268-0259INTERCHANGEABLE
REBUSHING KIT,TORQUE ROD,VEHICUL
1045Z1351
5130-01-329-6479INTERCHANGEABLE
BRUSH,WIRE,ROTARY END
5330-01-362-5425INTERCHANGEABLE
GASKET
23311
2540-01-593-4514INTERCHANGEABLE
LATCH,DOOR,VEHICULAR
3940-01-716-9237INTERCHANGEABLE
ADAPTER,HOISTING
23311

Frequently Asked Questions

What is NSN 5306-00-993-0500?

NSN 5306-00-993-0500 is a Bolt,machine, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-993-0500?

NSN 5306-00-993-0500 has 4 cross-referenced part numbers: 23311 (Hamilton Sundstrand Corporation), AN74-3 (Aeronautical Standards Group Dept of Navy and Air Force), MS20073-04-03 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), TF36502 (Eaton Corp Dba Eaton Aerospace Jackson).

What NSN replaces 5306-00-993-0500?

There are 8 known substitutes for 5306-00-993-0500: 5306-00-156-2656, 6685-00-514-5625, 6685-00-678-5069 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23311?

Key specifications for 23311: Head Style: DISHED HEXAGON; Head Height: 0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES MINIMUM AND 0.454 INCHES MAXIMUM IN; Fastener Length: 0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-993-0500 still in active supply?

NSN 5306-00-993-0500 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.
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