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FF2951B — CYLINDER ASSEMBLY,HYDRAULIC BRAK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

FF2951B: CYLINDER ASSEMBLY,HYDRAULIC BRAK.

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include material: IRON CAST BODY, port_style: GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED, overall_width: 3.531 INCHES NOMINAL IN, overall_height: 6.312 INCHES NOMINAL IN, reservoir_type: INTEGRAL, actuation_method: DIRECT. This part is cataloged in the U.S.

Government catalog under NSN 2530-00-845-8917, 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
FF2951B
NSN: 2530-00-845-8917
FSC: 2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
materialIRON CAST BODY
port_styleGASKET SEAL LOCATION NOT OTHERWISE SPECIFIED
overall_width3.531 INCHES NOMINAL IN
overall_height6.312 INCHES NOMINAL IN
reservoir_typeINTEGRAL
actuation_methodDIRECT
features_providedRUBBER BOOT
port_thread_class2B LOCATION NOT OTHERWISE SPECIFIED
mounting_provisionUNTHREADED MOUNTING HOLES
port_thread_diameter0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
body_outside_diameter2.312 INCHES NOMINAL IN
bleeding_feature_quantity2
NSN2530-00-845-8917
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER ASSEMBLY,HYDRAULIC BRAK TITLE COMPONENT PN FF2951B MFR CYLINDER ASSEMBLY,HYDR
KEY FEATURES
•
ACTUATION METHOD: DIRECT
•
MOUNTING FACILITY DIAMETER: 0.406 INCHES NOMINAL IN
•
BLEEDING FEATURE QUANTITY: 2
•
PORT THREAD SERIES DESIGNATOR: UNF LOCATION NOT OTHERWISE SPECIFIED
•
BODY OUTSIDE DIAMETER: 2.312 INCHES NOMINAL IN
•
MOUNTING PROVISION ARRANGEMENT STYLE: FOUR HOLE RECTANGULAR
•
LONGEST VERTICAL DISTANCE BETWEEN MOUNTING CENTERS: 2.406 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
ACTUATION METHODDIRECT
MOUNTING FACILITY DIAMETER0.406 INCHES NOMINAL IN
OVERALL HEIGHT6.312 INCHES NOMINAL IN
BLEEDING FEATURE QUANTITY2
PORT THREAD SERIES DESIGNATORUNF LOCATION NOT OTHERWISE SPECIFIED
BODY OUTSIDE DIAMETER2.312 INCHES NOMINAL IN
MOUNTING PROVISION ARRANGEMENT STYLEFOUR HOLE RECTANGULAR
LONGEST VERTICAL DISTANCE BETWEEN MOUNTING CENTERS2.406 INCHES NOMINAL IN
OVERALL WIDTH3.531 INCHES NOMINAL IN
PORT THREAD CLASS2B LOCATION NOT OTHERWISE SPECIFIED
SUBSTITUTES & CROSS-REFERENCES 2
57156R91Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
1123Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FF2951B?
FF2951B is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace FF2951B?
There are 2 known substitutes for FF2951B: 57156R91, 1123. Substitute compatibility should be verified for your specific system.
What is the NSN for FF2951B?
FF2951B is cataloged in the U.S. Government catalog under NSN 2530-00-845-8917. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.