PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520878Bolt,machine

Renk America Llc Div Renk America · NSN 5306-00-335-4245 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-335-4245 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-335-4245. Primary manufacturer part number: 520878.
Features
  • Bolt,machine — FSC 5306
  • Fastener Length: 3.220 INCHES MINIMUM AND 3.230 INCHES MAXIMUM IN
  • Head Style: HEXAGON
  • Grip Length: 2.140 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN
  • Thread Class: 3A A
  • Width Between Flats: 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
  • Head Height: 0.190 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 24
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8640 or Steel Comp 8740 or Steel Comp 4140 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-335-4245, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Renk America Llc Div Renk America. Government technical data includes 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-335-4245
Primary Part Number520878
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerRenk America Llc Div Renk America
StatusACTIVE
Fastener Length3.220 INCHES MINIMUM AND 3.230 INCHES MAXIMUM IN
Head StyleHEXAGON
Grip Length2.140 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN
Thread Class3A A
Width Between Flats0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
Head Height0.190 INCHES NOMINAL IN
Thread Quantity Per Inch24
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.312 INCHES IN
Thread Length1.000 INCHES MINIMUM IN
Features ProvidedFINISHED HEAD
Surface TreatmentCADMIUM OVERALL
Material Document and ClassificationASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
Thread Series DesignatorUNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2640-00-052-085115R INTERCHANGEABLE
Valve,pneumatic Tire
Schrader-Bridgeport International Inc Dba Schrader Automotive
5935-00-481-7420 INTERCHANGEABLE
Connector,receptacle,electrical
2530-00-586-4240520878 INTERCHANGEABLE
Valve,brake Pneumatic
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
2915-00-594-7926520878 INTERCHANGEABLE
Lever Assembly,servo
Hamilton Sundstrand Corporation Dba Collins Aerospace
Cross-Reference Index
Part NumberManufacturer
520878 PRIMARY Renk America Llc Div Renk America (USA)
8678914 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
2640-00-052-0851INTERCHANGEABLE
VALVE,PNEUMATIC TIRE
15R
5935-00-481-7420INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2530-00-586-4240INTERCHANGEABLE
VALVE,BRAKE PNEUMATIC
520878
2915-00-594-7926INTERCHANGEABLE
LEVER ASSEMBLY,SERVO
520878

Frequently Asked Questions

What is NSN 5306-00-335-4245?

NSN 5306-00-335-4245 is a Bolt,machine, manufactured by Renk America Llc Div Renk America, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-335-4245?

NSN 5306-00-335-4245 has 2 cross-referenced part numbers: 520878 (Renk America Llc Div Renk America), 8678914 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 5306-00-335-4245?

There are 4 known substitutes for 5306-00-335-4245: 2640-00-052-0851, 5935-00-481-7420, 2530-00-586-4240 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 520878?

Key specifications for 520878: Fastener Length: 3.220 INCHES MINIMUM AND 3.230 INCHES MAXIMUM IN; Head Style: HEXAGON; Grip Length: 2.140 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN; Thread Class: 3A A. 15 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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