PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7377783Diaphragm,chamber,brake

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 2530-00-737-7783 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-737-7783 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-737-7783. Primary manufacturer part number: 7377783.
Features
  • Diaphragm,chamber,brake — FSC 2530
  • Mounting Method: FLANGE
  • Mounting Hole Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
  • Mounting Hole Quantity: 16
  • Criticality Code Justification: FEAT
  • Mounting Hole Spacing: EQUALLY SPACED ON 7 IN. BOLT CIRCLE IN
  • FSC Application Data: WHEEL,TRUCK
  • Material Thickness: 0.1715 INCHES MINIMUM AND 0.2195 INCHES MAXIMUM IN
Applications
  • Applications requiring Rubber Synthetic construction
General Description

The Diaphragm,chamber,brake, cataloged under National Stock Number 2530-00-737-7783, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 33 commercial cross-references from 29 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2530-00-737-7783
Primary Part Number7377783
Item NameDiaphragm,chamber,brake
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
Mounting MethodFLANGE
Mounting Hole Diameter0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Mounting Hole Quantity16
Criticality Code JustificationFEAT
Mounting Hole SpacingEQUALLY SPACED ON 7 IN. BOLT CIRCLE IN
FSC Application DataWHEEL,TRUCK
Material Thickness0.1715 INCHES MINIMUM AND 0.2195 INCHES MAXIMUM IN
Overall Outside Diameter7.875 INCHES NOMINAL IN
Diaphragm TypeFLANGED ANGULAR RECESSED
ConstructionCOTTON PLY OR RAYON PLY
MaterialRUBBER SYNTHETIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2530-00-287-2321200001 INTERCHANGEABLE
Diaphragm,chamber,brake
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
2840-00-785-6882310980 INTERCHANGEABLE
Cover
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
6130-01-055-0835D12-30 INTERCHANGEABLE
Power Supply
Acopian Technical Company
6685-01-115-1704201271 INTERCHANGEABLE
Gage,differential,dial Indicatin
Admiral Filter Company Llc
4720-01-400-6040201-271 INTERCHANGEABLE
Hose Assembly,nonmetallic
Willard Marine, Inc.
8455-01-429-9555 INTERCHANGEABLE
Insignia,shoulder Sleeve
4820-01-518-2500R04B4-5.0NS INTERCHANGEABLE
Valve,linear,directional Control
Sterling Hydraulics Inc
6515-01-611-5931N2340 INTERCHANGEABLE
Elevator,periosteal
Buffalo Supply Inc.
8455-01-687-9576 INTERCHANGEABLE
Insignia,shoulder Sleeve
5340-01-693-48487377783 INTERCHANGEABLE
Bracket,multiple Angle
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
201271 Fruehauf Corp (USA)
201271 Abm Equipment, Llc (USA)
V3049X White Motor Corp (USA)
201271 Gate City Steel Corp (USA)
201271 Watson H S Co (USA)
201271 Timpte Inc (USA)
25174M Diamond Reo Truck Co (USA)
201271 Crane Co Div Valve Div (USA)
201271 Strick Trailer Co (USA)
6224620 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
201271 Kaitlin Corp (USA)
201271 Lufkin Industries, Inc. Dba Power Transmission (USA)
201271 Kentucky Mfg Co (USA)
245795 Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
11B7092 Napco International Llc Dba Napco International Inc (USA)
201271 American Trailers Inc (USA)
201271 Premier Central Truck Body (USA)
245795 Hercules Engine Co Inc (USA)
3-109-80 Flxible Co the (USA)
951859 Clark Equipment Co (USA)
Related Parts
2530-00-287-2321INTERCHANGEABLE
DIAPHRAGM,CHAMBER,BRAKE
200001
2840-00-785-6882INTERCHANGEABLE
COVER
310980
6130-01-055-0835INTERCHANGEABLE
POWER SUPPLY
D12-30
6685-01-115-1704INTERCHANGEABLE
GAGE,DIFFERENTIAL,DIAL INDICATIN
201271
4720-01-400-6040INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
201-271
8455-01-429-9555INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
4820-01-518-2500INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
R04B4-5.0NS
6515-01-611-5931INTERCHANGEABLE
ELEVATOR,PERIOSTEAL
N2340
8455-01-687-9576INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
5340-01-693-4848INTERCHANGEABLE
BRACKET,MULTIPLE ANGLE
7377783
5305-01-700-6495INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
201271
8455-01-714-3185INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 2530-00-737-7783?

NSN 2530-00-737-7783 is a Diaphragm,chamber,brake, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-00-737-7783?

NSN 2530-00-737-7783 has 33 cross-referenced part numbers: 201271 (Fruehauf Corp), 201271 (Abm Equipment, Llc), V3049X (White Motor Corp), 201271 (Gate City Steel Corp), 201271 (Watson H S Co) and 28 more.

What NSN replaces 2530-00-737-7783?

There are 12 known substitutes for 2530-00-737-7783: 2530-00-287-2321, 2840-00-785-6882, 6130-01-055-0835 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7377783?

Key specifications for 7377783: Special Features: WEAPON SYSTEM ESSENTIAL; Mounting Method: FLANGE; Mounting Hole Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Mounting Hole Quantity: 16. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-00-737-7783 still in active supply?

NSN 2530-00-737-7783 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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