PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H10-8Screw,cap,hexagon Head

Ims Engineered Products Llc · NSN 5305-00-188-0776 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-188-0776 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-188-0776. Primary manufacturer part number: H10-8.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Width Between Flats: 0.437 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Head Height: 0.187 INCHES NOMINAL IN
  • Thread Length: 0.400 INCHES MINIMUM IN
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-188-0776, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ims Engineered Products Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5305-00-188-0776
Primary Part NumberH10-8
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerIms Engineered Products Llc
StatusACTIVE
Width Between Flats0.437 INCHES NOMINAL IN
Nominal Thread Diameter0.250 INCHES IN
Thread DirectionRIGHT-HAND
Fastener Length0.500 INCHES NOMINAL IN
Head Height0.187 INCHES NOMINAL IN
Thread Length0.400 INCHES MINIMUM IN
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 3,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch20
Surface TreatmentCADMIUM OVERALL
Head StyleHEXAGON
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-616-5997GN10U820 INTERCHANGEABLE
Nut,self-Locking,hexagon
Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems
5950-00-866-0409H108 INTERCHANGEABLE
Reactor
Magnetika Inc
4720-01-084-71052781-8 INTERCHANGEABLE
Hose,nonmetallic
Danfoss Power Solutions II, Llc
Cross-Reference Index
Part NumberManufacturer
H10-8 PRIMARY Ims Engineered Products Llc (USA)
Related Parts
5310-00-616-5997INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
GN10U820
5950-00-866-0409INTERCHANGEABLE
REACTOR
H108
4720-01-084-7105INTERCHANGEABLE
HOSE,NONMETALLIC
2781-8

Frequently Asked Questions

What is NSN 5305-00-188-0776?

NSN 5305-00-188-0776 is a Screw,cap,hexagon Head, manufactured by Ims Engineered Products Llc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-188-0776?

NSN 5305-00-188-0776 has 1 cross-referenced part number: H10-8 (Ims Engineered Products Llc).

What NSN replaces 5305-00-188-0776?

There are 3 known substitutes for 5305-00-188-0776: 5310-00-616-5997, 5950-00-866-0409, 4720-01-084-7105. Verify interchangeability with system specifications before substitution.

What are the specifications of H10-8?

Key specifications for H10-8: Width Between Flats: 0.437 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN; Thread Direction: RIGHT-HAND; Fastener Length: 0.500 INCHES NOMINAL IN. 14 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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