PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CA21037-6-2HSBolt,internal Wrenching

Howmet Global Fastening Systems Inc. Div Tridair Products · NSN 5306-01-359-6902 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-01-359-6902 — this item is cataloged by the U.S. Government under National Stock Number 5306-01-359-6902. Primary manufacturer part number: CA21037-6-2HS.
Features
  • Bolt,internal Wrenching — FSC 5306
  • Countersink Angle: 100.0 DEGREES NOMINAL
  • Thread Series Designator: UNF
  • Internal Drive Style: HEXAGON
  • Fastener Length: 1.220 INCHES NOMINAL IN
  • Head Style: COUNTERSUNK CYLINDRICAL CONVEX
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
  • Surface Treatment: PASSIVATE SPRING
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 631 Spring construction
General Description

The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-359-6902, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 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
NSN5306-01-359-6902
Primary Part NumberCA21037-6-2HS
Item NameBolt,internal Wrenching
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerHowmet Global Fastening Systems Inc. Div Tridair Products
StatusACTIVE
Countersink Angle100.0 DEGREES NOMINAL
Thread Series DesignatorUNF
Internal Drive StyleHEXAGON
Fastener Length1.220 INCHES NOMINAL IN
Head StyleCOUNTERSUNK CYLINDRICAL CONVEX
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
Surface TreatmentPASSIVATE SPRING
Thread DirectionRIGHT-HAND
MaterialSTEEL COMP 631 SPRING
Thread Class3A A
Head Major Diameter0.505 INCHES MINIMUM IN
Material Document and ClassificationAMS5673 ASSN STD SINGLE MATERIAL RESPONSE SPRING
Nominal Thread Diameter0.375 INCHES IN
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 FASTENER
Thread Quantity Per Inch24
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5935-00-849-94551200-0058 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Keysight Technologies Inc
Cross-Reference Index
Part NumberManufacturer
CA21037-6-2HS PRIMARY Howmet Global Fastening Systems Inc. Div Tridair Products (USA)
FRS319817-2 Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (GBR)
5306PL2144033 Jednolity Indeks Materialowy - Uniform Material Index (POL)
120000-6-2 PRIMARY Monadnock Company, the Dba Lisi Aerospace (USA)
5306PL2114504 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5306PL2111413 Jednolity Indeks Materialowy - Uniform Material Index (POL)
C9537-6-2 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
Related Parts
5935-00-849-9455INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
1200-0058

Frequently Asked Questions

What is NSN 5306-01-359-6902?

NSN 5306-01-359-6902 is a Bolt,internal Wrenching, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-01-359-6902?

NSN 5306-01-359-6902 has 7 cross-referenced part numbers: CA21037-6-2HS (Howmet Global Fastening Systems Inc. Div Tridair Products), FRS319817-2 (Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd), 5306PL2144033 (Jednolity Indeks Materialowy - Uniform Material Index), 120000-6-2 (Monadnock Company, the Dba Lisi Aerospace), 5306PL2114504 (Jednolity Indeks Materialowy - Uniform Material Index) and 2 more.

What NSN replaces 5306-01-359-6902?

There is 1 known substitute for 5306-01-359-6902: 5935-00-849-9455. Verify interchangeability with system specifications before substitution.

What are the specifications of CA21037-6-2HS?

Key specifications for CA21037-6-2HS: Countersink Angle: 100.0 DEGREES NOMINAL; Thread Series Designator: UNF; Internal Drive Style: HEXAGON; Fastener Length: 1.220 INCHES NOMINAL IN. 16 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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