PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

00556-1Bolt,key Head

Defense Logistics Agency Dba Defense Supply Center Philadelphia · NSN 5306-00-354-3099 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-354-3099 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-354-3099. Primary manufacturer part number: 00556-1.
Features
  • Bolt,key Head — FSC 5306
  • Key Length: 0.453 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 8
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Minimum Yield Strength: 75000 POUNDS PER SQUARE INCH LBS
  • Countersink Angle: 60.0 DEGREES NOMINAL
  • Material: STEEL COMP 1035 OVERALL
  • Head Style: FLAT COUNTERSUNK REVERSE KEYED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1035 Overall construction
General Description

The Bolt,key Head, cataloged under National Stock Number 5306-00-354-3099, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 16 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-354-3099
Primary Part Number00556-1
Item NameBolt,key Head
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerDefense Logistics Agency Dba Defense Supply Center Philadelphia
StatusACTIVE
Key Length0.453 INCHES NOMINAL IN
Thread Quantity Per Inch8
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Minimum Yield Strength75000 POUNDS PER SQUARE INCH LBS
Countersink Angle60.0 DEGREES NOMINAL
MaterialSTEEL COMP 1035 OVERALL
Head StyleFLAT COUNTERSUNK REVERSE KEYED
Nominal Thread Diameter1.000 INCHES IN
Fastener Length3.750 INCHES NOMINAL IN
Head Diameter1.594 INCHES NOMINAL IN
Thread Length2.000 INCHES MINIMUM IN
Head Height0.514 INCHES NOMINAL IN
Minimum Tensile Strength90000 POUNDS PER SQUARE INCH LBS
Hardness Rating15.2 ROCKWELL C MINIMUM AND 25.4 ROCKWELL C MAXIMUM OVERALL
Thread Class2A A
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6685-00-265-0902J9054 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5920-00-280-3478FUF9 INTERCHANGEABLE
Fuse,cartridge
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5999-01-541-4752005561 INTERCHANGEABLE
Housing,electronic Components
Finn Corp Dba Finn Corp
Cross-Reference Index
Part NumberManufacturer
00556-1 PRIMARY Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
C12596-1B Johnson C S Co Inc (USA)
Related Parts
6685-00-265-0902INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J9054
5920-00-280-3478INTERCHANGEABLE
FUSE,CARTRIDGE
FUF9
5999-01-541-4752INTERCHANGEABLE
HOUSING,ELECTRONIC COMPONENTS
005561

Frequently Asked Questions

What is NSN 5306-00-354-3099?

NSN 5306-00-354-3099 is a Bolt,key Head, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-354-3099?

NSN 5306-00-354-3099 has 2 cross-referenced part numbers: 00556-1 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), C12596-1B (Johnson C S Co Inc).

What NSN replaces 5306-00-354-3099?

There are 3 known substitutes for 5306-00-354-3099: 6685-00-265-0902, 5920-00-280-3478, 5999-01-541-4752. Verify interchangeability with system specifications before substitution.

What are the specifications of 00556-1?

Key specifications for 00556-1: Key Length: 0.453 INCHES NOMINAL IN; Thread Quantity Per Inch: 8; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Minimum Yield Strength: 75000 POUNDS PER SQUARE INCH LBS. 16 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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