PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

500-771Screw,cap,hexagon Head

Ampco Pumps Company Llc · NSN 5305-01-299-6602 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-299-6602 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-299-6602. Primary manufacturer part number: 500-771.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Material: STEEL CORROSION RESISTING OVERALL
  • Thread Direction: RIGHT-HAND
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
  • Width Between Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 16
  • Fastener Length: 1.000 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-299-6602, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ampco Pumps Company Llc. Government technical data includes 11 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
NSN5305-01-299-6602
Primary Part Number500-771
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAmpco Pumps Company Llc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OVERALL
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Thread Quantity Per Inch16
Fastener Length1.000 INCHES NOMINAL IN
Thread Class2A A
Nominal Thread Diameter0.375 INCHES IN
Head StyleHEXAGON
Thread Length0.875 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4710-00-911-8134500771 INTERCHANGEABLE
Tube Assembly,metal
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5985-00-982-2483449500771 INTERCHANGEABLE
Waveguide Switch As
Waveline Inc
5331-01-123-3298 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
500-771 PRIMARY Ampco Pumps Company Llc (USA)
500-771 Ampco Metal Inc. Dba Ampco Metal Inc (USA)
Related Parts
4710-00-911-8134INTERCHANGEABLE
TUBE ASSEMBLY,METAL
500771
5985-00-982-2483INTERCHANGEABLE
WAVEGUIDE SWITCH AS
449500771
5331-01-123-3298INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5305-01-299-6602?

NSN 5305-01-299-6602 is a Screw,cap,hexagon Head, manufactured by Ampco Pumps Company Llc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-299-6602?

NSN 5305-01-299-6602 has 2 cross-referenced part numbers: 500-771 (Ampco Pumps Company Llc), 500-771 (Ampco Metal Inc. Dba Ampco Metal Inc).

What NSN replaces 5305-01-299-6602?

There are 3 known substitutes for 5305-01-299-6602: 4710-00-911-8134, 5985-00-982-2483, 5331-01-123-3298. Verify interchangeability with system specifications before substitution.

What are the specifications of 500-771?

Key specifications for 500-771: Material: STEEL CORROSION RESISTING OVERALL; Thread Direction: RIGHT-HAND; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN. 11 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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