PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HB1/4-28X5/8G5ZPScrew,cap,hexagon Head

Saginaw Products Corporation Dba Cignys · NSN 5305-01-626-1845 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-626-1845 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-626-1845. Primary manufacturer part number: HB1/4-28X5/8G5ZP.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Head Style: HEXAGON
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 20
  • Fastener Length: 0.625 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Direction: RIGHT-HAND
  • 2 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-626-1845, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Saginaw Products Corporation Dba Cignys. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5305-01-626-1845
Primary Part NumberHB1/4-28X5/8G5ZP
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerSaginaw Products Corporation Dba Cignys
StatusACTIVE
Head StyleHEXAGON
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch20
Fastener Length0.625 INCHES NOMINAL IN
Nominal Thread Diameter0.250 INCHES IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-068-05019415796 INTERCHANGEABLE
Screw,cap,hexagon Head
General Motors Corp
Cross-Reference Index
Part NumberManufacturer
HB1/4-28X5/8G5ZP PRIMARY Saginaw Products Corporation Dba Cignys (USA)
1/4-20 X 5/8 Saginaw Products Corporation Dba Cignys (USA)
Related Parts
5305-00-068-0501INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
9415796

Frequently Asked Questions

What is NSN 5305-01-626-1845?

NSN 5305-01-626-1845 is a Screw,cap,hexagon Head, manufactured by Saginaw Products Corporation Dba Cignys, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-626-1845?

NSN 5305-01-626-1845 has 2 cross-referenced part numbers: HB1/4-28X5/8G5ZP (Saginaw Products Corporation Dba Cignys), 1/4-20 X 5/8 (Saginaw Products Corporation Dba Cignys).

What NSN replaces 5305-01-626-1845?

There is 1 known substitute for 5305-01-626-1845: 5305-00-068-0501. Verify interchangeability with system specifications before substitution.

What are the specifications of HB1/4-28X5/8G5ZP?

Key specifications for HB1/4-28X5/8G5ZP: Head Style: HEXAGON; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Part Name Assigned by Controlling Agency: BOLT, HEX HEAD, 1/4-20 X 5/8LG; Thread Quantity Per Inch: 20. 8 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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