PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17520Cap,retaining

American Bristol Industries Inc. · NSN 4310-01-073-9039 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-073-9039 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-073-9039. Primary manufacturer part number: 17520.
Features
  • Cap,retaining — FSC 4310
  • General Characteristics Item Description: PHYSICAL CHARACTERISTICS-MATERIAL CRES,0.975 IN.OD,0.683 IN.LG,32 DEGREE CHAMFER ONE END,BORED OUT OTHER END LARGE ID 0.825 IN;0.255 IN.DEEP WITH 45 DEGREE CHAMFER TO SMALL ID 0.623 IN;0.295 DEEP,FOUR 0.314 IN.DIA HOLES EQUALLY SPACED 90 DEGREES APART ON OD,TWO HOLES ON END 0.500 IN.CENTER TO CENTER ALIGNED WITH CENTER OF TWO HOLES ON PERIPHERY IN
  • 1 verified cross-reference
  • Primary manufacturer: American Bristol Industries Inc.
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Cap,retaining, cataloged under National Stock Number 4310-01-073-9039, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is American Bristol Industries Inc.. Government technical data includes 1 verified specification, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-073-9039
Primary Part Number17520
Item NameCap,retaining
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerAmerican Bristol Industries Inc.
StatusACTIVE
General Characteristics Item DescriptionPHYSICAL CHARACTERISTICS-MATERIAL CRES,0.975 IN.OD,0.683 IN.LG,32 DEGREE CHAMFER ONE END,BORED OUT OTHER END LARGE ID 0.825 IN;0.255 IN.DEEP WITH 45 DEGREE CHAMFER TO SMALL ID 0.623 IN;0.295 DEEP,FOUR 0.314 IN.DIA HOLES EQUALLY SPACED 90 DEGREES APART ON OD,TWO HOLES ON END 0.500 IN.CENTER TO CENTER ALIGNED WITH CENTER OF TWO HOLES ON PERIPHERY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-050-1495 INTERCHANGEABLE
Semiconductor Device,thyristor
3110-00-100-0529 INTERCHANGEABLE
Cup,tapered Roller Bearing
5330-00-100-7767 INTERCHANGEABLE
Seal Kit
5305-00-138-452317520 INTERCHANGEABLE
Screw
Hein Werner Corp
5330-00-141-2419175-20 INTERCHANGEABLE
Gasket
Lenz Inc Dba the Lenz Company
3455-00-224-3648SHML-400 INTERCHANGEABLE
Cutter,milling,shell End
Pohl Tool Co
3030-00-317-481110105 INTERCHANGEABLE
Belt,v
Liftking Manufacturing Corp
5962-00-514-1917619-3531-001 INTERCHANGEABLE
Microcircuit,digital
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5945-00-615-8841SGMESPD143-26 INTERCHANGEABLE
Chopper,electronic
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
1040-00-938-895754A50B94 INTERCHANGEABLE
Cap,center Section
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
17520 PRIMARY American Bristol Industries Inc. (USA)
Related Parts
5961-00-050-1495INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
3110-00-100-0529INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
5330-00-100-7767INTERCHANGEABLE
SEAL KIT
5305-00-138-4523INTERCHANGEABLE
SCREW
17520
5330-00-141-2419INTERCHANGEABLE
GASKET
175-20
3455-00-224-3648INTERCHANGEABLE
CUTTER,MILLING,SHELL END
SHML-400
3030-00-317-4811INTERCHANGEABLE
BELT,V
10105
5962-00-514-1917INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
619-3531-001
5945-00-615-8841INTERCHANGEABLE
CHOPPER,ELECTRONIC
SGMESPD143-26
1040-00-938-8957INTERCHANGEABLE
CAP,CENTER SECTION
54A50B94
3120-00-998-6000INTERCHANGEABLE
BEARING,SLEEVE
1-7520
5342-01-089-4200INTERCHANGEABLE
BRACKET,MUFFLER
5-14-515-10-1

Frequently Asked Questions

What is NSN 4310-01-073-9039?

NSN 4310-01-073-9039 is a Cap,retaining, manufactured by American Bristol Industries Inc., classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-073-9039?

NSN 4310-01-073-9039 has 1 cross-referenced part number: 17520 (American Bristol Industries Inc.).

What NSN replaces 4310-01-073-9039?

There are 12 known substitutes for 4310-01-073-9039: 5961-00-050-1495, 3110-00-100-0529, 5330-00-100-7767 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17520?

Key specifications for 17520: General Characteristics Item Description: PHYSICAL CHARACTERISTICS-MATERIAL CRES,0.975 IN.OD,0.683 IN.LG,32 DEGREE CHAMFER ONE END,BORED OUT OTHER END LARGE ID 0.825 IN;0.255 IN.DEEP WITH 45 DEGREE CHAMFER TO SMALL ID 0.623 IN;0.295 DEEP,FOUR 0.314 IN.DIA HOLES EQUALLY SPACED 90 DEGREES APART ON OD,TWO HOLES ON END 0.500 IN.CENTER TO CENTER ALIGNED WITH CENTER OF TWO HOLES ON PERIPHERY IN. 1 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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