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172-637 — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The CYLINDER,HYDRAULIC BRAKE,WHEEL is a the manufacturer industrial component. Key specifications include coil_quantity: 13.63, inside_diameter: 0.720 INCHES NOMINAL IN, spring_free_length: 1.700 INCHES NOMINAL IN, coil_helix_direction: RIGHT-HAND OR LEFT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 2530-00-125-6043, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
172-637
NSN: 2530-00-125-6043
FSC: 2530
CAGE: 16758 — GENERAL MOTORS CORP DELCO ELECTRONICS DIV (USA)
SPECIFICATIONS
coil_quantity13.63
inside_diameter0.720 INCHES NOMINAL IN
spring_free_length1.700 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
NSN2530-00-125-6043
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER,HYDRAULIC BRAKE,WHEEL TITLE COMPONENT PN 172-637 MFR CYLINDER,HYDRAULIC BRA
KEY FEATURES
•
BLEEDING FEATURE QUANTITY: 1
•
BORE TYPE: STRAIGHT
•
MATERIAL: IRON BODY
•
PORT THREAD DIAMETER: 0.375 INCHES NOMINAL SINGLE PORT IN
•
BODY OUTSIDE DIAMETER: 1.395 INCHES NOMINAL IN
•
PORT THREAD QUANTITY PER INCH: 24.0 SINGLE PORT
•
PORT THREAD SERIES DESIGNATOR: UNF SINGLE PORT
TECHNICAL CHARACTERISTICS
BLEEDING FEATURE QUANTITY1
BORE TYPESTRAIGHT
MATERIALIRON BODY
PORT THREAD DIAMETER0.375 INCHES NOMINAL SINGLE PORT IN
OVERALL LENGTH3.375 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.395 INCHES NOMINAL IN
PORT THREAD QUANTITY PER INCH24.0 SINGLE PORT
PORT THREAD SERIES DESIGNATORUNF SINGLE PORT
SPECIAL FEATURESFURN W/BLEEDING INSTURCTIONS
SEAT ANGLE IN DEG42.0 SINGLE PORT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
62899HInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
72287InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2276170InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
699InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FC11337InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3605InterchangeableGOVERNMENT REGISTRY
3605_pro-Ltg-2m-Blk
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 172-637?
172-637 is a CYLINDER,HYDRAULIC BRAKE,WHEEL.
What parts can replace 172-637?
There are 11 known substitutes for 172-637: 62899H, 72287, 2276170 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 172-637?
172-637 is cataloged in the Federal Logistics Information System under NSN 2530-00-125-6043. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026