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Technical Data Sheet
PartsTable / COMPONENT / 60-656PC551
60-656PC551 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL BODY, seat_angle_in_deg: 45.000 NOMINAL, body_inside_diameter: 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN, body_outside_diameter: 2.491 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN, seating_surface_shape: ANGULAR, seal_accommodation_type: RECESSED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-956-1413, 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
60-656PC551
NSN: 4820-00-956-1413
FSC: 4820
CAGE: 27235 — HARDIE-TYNES CO., INC. (USA)
SPECIFICATIONS
materialSTEEL BODY
seat_angle_in_deg45.000 NOMINAL
body_inside_diameter1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
body_outside_diameter2.491 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
seal_accommodation_typeRECESSED
material_document_and_classificationMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
NSN4820-00-956-1413
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 60-656PC551 · 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
•
MATERIAL: STEEL BODY
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
•
BODY OUTSIDE DIAMETER: 2.491 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BODY
SEATING SURFACE SHAPEANGULAR
MATERIALCOBALT ALLOY FACE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
BODY OUTSIDE DIAMETER2.491 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION17-4PH,ARMCO STEEL CORP MFR REF SINGLE MATERIAL RESPONSE BODY
BODY INSIDE DIAMETER1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
SEAT ANGLE IN DEG45.000 NOMINAL
SEAL ACCOMMODATION TYPERECESSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
587551Interchangeable
interchangeable cross-reference
interchangeable
V1623Interchangeable
interchangeable cross-reference
interchangeable
145C51Interchangeable
interchangeable cross-reference
interchangeable
60-587PC551Interchangeable
Same NIIN cross-reference
interchangeable
60-606PC551Interchangeable
Same NIIN cross-reference
interchangeable
60-649PC551Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 60-656PC551?
60-656PC551 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 60-656PC551?
There are 6 known substitutes for 60-656PC551: 587551, V1623, 145C51 and 3 more. Substitute compatibility should be verified for your specific system.
Is 60-656PC551 still available?
60-656PC551 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026