PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SR503Insert,screw Thread

Howmet Global Fastening Systems Inc Div Rosan Products · NSN 5325-00-943-5395 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-943-5395 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-943-5395. Primary manufacturer part number: SR503.
Features
  • Insert,screw Thread — FSC 5325
  • Material: STEEL COMP 630 OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Style Designator: PLAIN
  • Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Insert Size: 0.562-24 UNEF
  • Thread Quantity Per Inch: 13
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 630 Overall construction
General Description

The Insert,screw Thread, cataloged under National Stock Number 5325-00-943-5395, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Howmet Global Fastening Systems Inc Div Rosan Products. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN5325-00-943-5395
Primary Part NumberSR503
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerHowmet Global Fastening Systems Inc Div Rosan Products
StatusACTIVE
MaterialSTEEL COMP 630 OVERALL
Surface TreatmentPASSIVATE OVERALL
Style DesignatorPLAIN
Material Document and ClassificationAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Insert Size0.562-24 UNEF
Thread Quantity Per Inch13
Length0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
Nominal Thread Size0.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5975-00-296-16692521 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
K8902-813 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
K8902-813 Howmet Global Fastening Systems Inc. Div Tridair Products (USA)
SR503 PRIMARY Howmet Global Fastening Systems Inc Div Rosan Products (USA)
Related Parts
5975-00-296-1669INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2521

Frequently Asked Questions

What is NSN 5325-00-943-5395?

NSN 5325-00-943-5395 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc Div Rosan Products, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-943-5395?

NSN 5325-00-943-5395 has 3 cross-referenced part numbers: K8902-813 (Howmet Global Fastening Systems Inc. Div Microdot Products), K8902-813 (Howmet Global Fastening Systems Inc. Div Tridair Products), SR503 (Howmet Global Fastening Systems Inc Div Rosan Products).

What NSN replaces 5325-00-943-5395?

There is 1 known substitute for 5325-00-943-5395: 5975-00-296-1669. Verify interchangeability with system specifications before substitution.

What are the specifications of SR503?

Key specifications for SR503: Material: STEEL COMP 630 OVERALL; Surface Treatment: PASSIVATE OVERALL; Style Designator: PLAIN; Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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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