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901-9 — PISTON,HYDRAULIC BRAKE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

901-9: PISTON,HYDRAULIC BRAKE.

The PISTON,HYDRAULIC BRAKE is a the manufacturer industrial component. Key specifications include overall_width: 2.52 INCHES NOMINAL IN, terminal_type: TAB W/SCREW, overall_height: 2.52 INCHES NOMINAL IN, overall_length: 1.41 INCHES NOMINAL IN, mounting_method: FLANGE SINGLE MOUNTING FACILITY, style_designator: RECTANGULAR PANEL MOUNT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-103-2495, 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
MRO→ MRO_GENERAL→ 901-9
NSN: 4820-00-103-2495
NIINs: 001032495, 007619865, 008295158, 010739043, 011587503, 013640485, 014082424, 015186631, 016167147
FSC: 4820 — Valves, Nonpowered
CAGE: 13669 — TESCOM CORP DBA TESCOM DIV TESCOM (USA)
SPECIFICATIONS
overall_width2.52 INCHES NOMINAL IN
terminal_typeTAB W/SCREW
overall_height2.52 INCHES NOMINAL IN
overall_length1.41 INCHES NOMINAL IN
mounting_methodFLANGE SINGLE MOUNTING FACILITY
style_designatorRECTANGULAR PANEL MOUNT
contact_load_current_rating65.0 AMPERES RESISTIVE LOAD HIGHEST AC VOLTAGE RATING AT SEA LEVEL
individual_section_quantity3
switch_contact_basic_designPILE-UP
contact_voltage_rating_in_volts600.0 HIGHEST AC VOLTAGE RATING AT SEA LEVEL
part_name_assigned_by_controlling_agencyAC ROTARY SWITCH -OFF +2 POSITIONS 240VAC 65A VAC
switch_actuator_indexing_position_quantity3 SINGLE ACTUATOR
NSN4820-00-103-2495
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 901-9 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OUTSIDE DIAMETER: 2.812 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL: COPPER ALLOY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER2.812 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALCOPPER ALLOY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
SUBSTITUTES & CROSS-REFERENCES 1
901-9CPSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 901-9?
901-9 is a PISTON,HYDRAULIC BRAKE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 901-9?
There is 1 known substitute for 901-9: 901-9CP. Substitute compatibility should be verified for your specific system.
What is the NSN for 901-9?
901-9 is cataloged in the U.S. Government catalog under NSN 4820-00-103-2495. 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.