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PartsTable / COMPONENT / 29851 PIECE 5 1-2IN
29851 PIECE 5 1-2IN ✓ 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 ANTI-BACKLASH ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL, seat_radius: 0.290 INCHES NOMINAL IN, thread_class: 3A A, overall_height: 0.844 INCHES NOMINAL IN, outside_diameter: 0.641 INCHES NOMINAL IN, style_designator: PLUG. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-159-2994, 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
29851 PIECE 5 1-2IN
NSN: 4820-01-159-2994
FSC: 4820
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialSTEEL
seat_radius0.290 INCHES NOMINAL IN
thread_class3A A
overall_height0.844 INCHES NOMINAL IN
outside_diameter0.641 INCHES NOMINAL IN
style_designatorPLUG
nominal_thread_size0.750 INCHES IN
thread_series_designatorUNF
NSN4820-01-159-2994
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 29851 PIECE 5 1-2IN · 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
•
STYLE DESIGNATOR: PLUG
•
THREAD SERIES DESIGNATOR: UNF
•
SEAT RADIUS: 0.290 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.641 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
MATERIAL: STEEL
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORPLUG
THREAD SERIES DESIGNATORUNF
OVERALL HEIGHT0.844 INCHES NOMINAL IN
SEAT RADIUS0.290 INCHES NOMINAL IN
OUTSIDE DIAMETER0.641 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES IN
MATERIALSTEEL
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
EE45325Interchangeable
interchangeable cross-reference
interchangeable
29851Interchangeable
interchangeable cross-reference
interchangeable
55136AXInterchangeable
interchangeable cross-reference
interchangeable
29851PC7Interchangeable
interchangeable cross-reference
interchangeable
29851PC7-1-1-4Interchangeable
interchangeable cross-reference
interchangeable
3294787Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 29851 PIECE 5 1-2IN?
29851 PIECE 5 1-2IN is a ANTI-BACKLASH ASSEMBLY.
What parts can replace 29851 PIECE 5 1-2IN?
There are 14 known substitutes for 29851 PIECE 5 1-2IN: EE45325, 29851, 55136AX and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 29851 PIECE 5 1-2IN?
29851 PIECE 5 1-2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-159-2994. 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: July 2026