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Technical Data Sheet
PartsTable / COMPONENT / 68-12A
68-12A ✓ 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

ROTOR,TURBINE,NONAIRCRAFT GAS TU. Key specifications include height: 0.125 INCHES NOMINAL IN, diameter: 0.561 INCHES NOMINAL IN, material: STEEL OVERALL, head_style: FLAT, chamfer_length: 0.015 INCHES NOMINAL IN, hardness_rating: 95.5 ROCKWELL B MINIMUM AND 99.0 ROCKWELL B MAXIMUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-603-6474, 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
68-12A
NSN: 4820-00-603-6474
FSC: 4820
CAGE: 98391 — ARKWIN INDUSTRIES, INC. DBA ARKWIN INDUSTRIES INC (USA)
SPECIFICATIONS
height0.125 INCHES NOMINAL IN
diameter0.561 INCHES NOMINAL IN
materialSTEEL OVERALL
head_styleFLAT
chamfer_length0.015 INCHES NOMINAL IN
hardness_rating95.5 ROCKWELL B MINIMUM AND 99.0 ROCKWELL B MAXIMUM OVERALL
special_features750 VA,SINGLE PHASE MODEL PANEL HEIGHT 5.25 INCH IN
style_designatorSTRAIGHT
pin_chamfer_angle45.0 DEGREES NOMINAL
pin_head_diameter0.875 INCHES NOMINAL IN
under_head_length2.468 INCHES NOMINAL IN
first_hole_diameter0.218 INCHES NOMINAL IN
NSN4820-00-603-6474
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 68-12A · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
6812Interchangeable
interchangeable cross-reference
interchangeable
C1782-4Interchangeable
interchangeable cross-reference
interchangeable
AN4C71AInterchangeable
interchangeable cross-reference
interchangeable
3241143Interchangeable
interchangeable cross-reference
interchangeable
142311Interchangeable
interchangeable cross-reference
interchangeable
417433-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 68-12A?
68-12A is a ROTOR,TURBINE,NONAIRCRAFT GAS TU.
What parts can replace 68-12A?
There are 13 known substitutes for 68-12A: 6812, C1782-4, AN4C71A and 10 more. Substitute compatibility should be verified for your specific system.
Is 68-12A still available?
68-12A 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