PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12576PC5Body,hydraulic Brake

Northern Line Machine Div of Commencement Intl Corp · NSN 3950-00-538-0339 · FSC 3950 · No Item Name Available
Verified by PartsTable
NSN 3950-00-538-0339 — this item is cataloged by the U.S. Government under National Stock Number 3950-00-538-0339. Primary manufacturer part number: 12576PC5.
Features
  • Body,hydraulic Brake — FSC 3950
  • General Characteristics Item Description: STEEL,AISI 4140; INTERNALLY SPLINED; INVOLUTE SPLINES; 54 TEETH; 30 DEG PRESSURE ANGLE; 5.680 IN. MIN 5.695 IN. MAX MAJOR DIA; 5.312 IN. MIN 5.322 IN. MAX MINOR DIA; THREE O-RING PORTS THD 9/16-18 UNF-2B; TWELVE HOLES 0.750 IN. DIA BY 0.750 IN. DEEP EQUALLY SPACED ON 4.375 IN. BOLT CIRCLE DIA; EIGHT THRU HOLES 0.406 IN. DIA IRREGULARITY SPACED ON 6.375 IN. BOLT CIRCLE DIA IN
  • 3 verified cross-references
  • Primary manufacturer: Northern Line Machine Div of Commencement Intl Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Body,hydraulic Brake, cataloged under National Stock Number 3950-00-538-0339, is classified within Federal Supply Class 3950 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Northern Line Machine Div of Commencement Intl Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3950-00-538-0339
Primary Part Number12576PC5
Item NameBody,hydraulic Brake
FSC / FSG3950 / 39 — No Item Name Available
ManufacturerNorthern Line Machine Div of Commencement Intl Corp
StatusACTIVE
General Characteristics Item DescriptionSTEEL,AISI 4140; INTERNALLY SPLINED; INVOLUTE SPLINES; 54 TEETH; 30 DEG PRESSURE ANGLE; 5.680 IN. MIN 5.695 IN. MAX MAJOR DIA; 5.312 IN. MIN 5.322 IN. MAX MINOR DIA; THREE O-RING PORTS THD 9/16-18 UNF-2B; TWELVE HOLES 0.750 IN. DIA BY 0.750 IN. DEEP EQUALLY SPACED ON 4.375 IN. BOLT CIRCLE DIA; EIGHT THRU HOLES 0.406 IN. DIA IRREGULARITY SPACED ON 6.375 IN. BOLT CIRCLE DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4820-00-288-7533 INTERCHANGEABLE
Valve,globe
5950-00-593-479923418 INTERCHANGEABLE
Transformer,power
Astec America Inc.
5950-00-648-535723418 INTERCHANGEABLE
Transformer,power
L3harris Technologies, Inc Div Space & Airborne Systems
2915-00-931-333423418-1 INTERCHANGEABLE
Retainer,shaft,butterfly
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5360-01-099-3934234181 INTERCHANGEABLE
Spring,helical,compression
Dana Off Highway Products, Llc
3040-01-182-174723418 INTERCHANGEABLE
Shaft,shouldered
Eaglepicher Corp
5305-01-424-446823418 INTERCHANGEABLE
Screw Assembly,panel
Basler Electric Co
2640-01-518-451023418 INTERCHANGEABLE
Valve Extension,tire
Myers Tire Supply Distribution Inc Div Akron Branch
Cross-Reference Index
Part NumberManufacturer
12576PC5 Northern Line Machine Div of Commencement Intl Corp (USA)
23418-1 Northern Line Machine Div of Commencement Intl Corp (USA)
23418 Northern Line Machine Div of Commencement Intl Corp (USA)
Related Parts
4820-00-288-7533INTERCHANGEABLE
VALVE,GLOBE
5950-00-593-4799INTERCHANGEABLE
TRANSFORMER,POWER
23418
5950-00-648-5357INTERCHANGEABLE
TRANSFORMER,POWER
23418
2915-00-931-3334INTERCHANGEABLE
RETAINER,SHAFT,BUTTERFLY
23418-1
5360-01-099-3934INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
234181
3040-01-182-1747INTERCHANGEABLE
SHAFT,SHOULDERED
23418
5305-01-424-4468INTERCHANGEABLE
SCREW ASSEMBLY,PANEL
23418
2640-01-518-4510INTERCHANGEABLE
VALVE EXTENSION,TIRE
23418

Frequently Asked Questions

What is NSN 3950-00-538-0339?

NSN 3950-00-538-0339 is a Body,hydraulic Brake, manufactured by Northern Line Machine Div of Commencement Intl Corp, classified under FSC 3950 (No Item Name Available). Status: active.

What are the part numbers for NSN 3950-00-538-0339?

NSN 3950-00-538-0339 has 3 cross-referenced part numbers: 12576PC5 (Northern Line Machine Div of Commencement Intl Corp), 23418-1 (Northern Line Machine Div of Commencement Intl Corp), 23418 (Northern Line Machine Div of Commencement Intl Corp).

What NSN replaces 3950-00-538-0339?

There are 8 known substitutes for 3950-00-538-0339: 4820-00-288-7533, 5950-00-593-4799, 5950-00-648-5357 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12576PC5?

Key specifications for 12576PC5: End Item Identification: NORTHERN LINE MACHINE AND ENGINEERING CO MODEL 3230HSPC; General Characteristics Item Description: STEEL,AISI 4140; INTERNALLY SPLINED; INVOLUTE SPLINES; 54 TEETH; 30 DEG PRESSURE ANGLE; 5.680 IN. MIN 5.695 IN. MAX MAJOR DIA; 5.312 IN. MIN 5.322 IN. MAX MINOR DIA; THREE O-RING PORTS THD 9/16-18 UNF-2B; TWELVE HOLES 0.750 IN. DIA BY 0.750 IN. DEEP EQUALLY SPACED ON 4.375 IN. BOLT CIRCLE DIA; EIGHT THRU HOLES 0.406 IN. DIA IRREGULARITY SPACED ON 6.375 IN. BOLT CIRCLE DIA IN. 2 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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