PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99-2170Insert,screw Thread

Hamilton Sundstrand Corporation · NSN 5325-00-550-9581 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-550-9581 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-550-9581. Primary manufacturer part number: 99-2170.
Features
  • Insert,screw Thread — FSC 5325
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Style Designator: KEYLOCK
  • Material Document and Classification: QQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Insert Size: 0.375-16 NC 3B
  • Top Portion Unthreaded Outside Length: 0.045 INCHES NOMINAL IN
  • Width Across Flats: 0.375 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Insert,screw Thread, cataloged under National Stock Number 5325-00-550-9581, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-550-9581
Primary Part Number99-2170
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusACTIVE
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Style DesignatorKEYLOCK
Material Document and ClassificationQQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Insert Size0.375-16 NC 3B
Top Portion Unthreaded Outside Length0.045 INCHES NOMINAL IN
Width Across Flats0.375 INCHES NOMINAL IN
Top Unthreaded Portion Outside Diameter0.292 INCHES NOMINAL IN
Length0.438 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3460-00-036-0283 INTERCHANGEABLE
Block,lapping
5360-00-314-718024617 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
3110-01-310-8554 INTERCHANGEABLE
Ball,bearing
6110-01-313-273624617 INTERCHANGEABLE
Starter,motor
Ward Leonard Ct Llc
6515-01-599-460190300 INTERCHANGEABLE
Nail,bone
Sign Fracture Care International Dba Sign
Cross-Reference Index
Part NumberManufacturer
246-1-7 Stanley Engineered Fastening Llc (USA)
933B-4CS0437 Stanley Engineered Fastening Llc (USA)
99-2170 PRIMARY Hamilton Sundstrand Corporation (USA)
Related Parts
3460-00-036-0283INTERCHANGEABLE
BLOCK,LAPPING
5360-00-314-7180INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
24617
3110-01-310-8554INTERCHANGEABLE
BALL,BEARING
6110-01-313-2736INTERCHANGEABLE
STARTER,MOTOR
24617
6515-01-599-4601INTERCHANGEABLE
NAIL,BONE
90300

Frequently Asked Questions

What is NSN 5325-00-550-9581?

NSN 5325-00-550-9581 is a Insert,screw Thread, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-550-9581?

NSN 5325-00-550-9581 has 3 cross-referenced part numbers: 246-1-7 (Stanley Engineered Fastening Llc), 933B-4CS0437 (Stanley Engineered Fastening Llc), 99-2170 (Hamilton Sundstrand Corporation).

What NSN replaces 5325-00-550-9581?

There are 5 known substitutes for 5325-00-550-9581: 3460-00-036-0283, 5360-00-314-7180, 3110-01-310-8554 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 99-2170?

Key specifications for 99-2170: Material: STEEL OVERALL; Surface Treatment: CADMIUM OVERALL; Style Designator: KEYLOCK; Material Document and Classification: QQ-S-633-CANCELED FED SPEC 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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