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50129-7 — DISK,VALVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

50129-7: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include thread_length: 0.375 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: 3805-01-537-7952;DITCHING MACHINE RT40, part_name_assigned_by_controlling_agency: BOLT,0.375. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-726-2484, 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
50129-7
NSN: 5315-00-726-2484
NIINs: 007262484, 011754277, 012130118, 013225495, 015482081
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 00679 — CASTLE INDUSTRIES INC. OF CALIFORNIA DBA M.C. GILL (USA)
SPECIFICATIONS
thread_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identification3805-01-537-7952;DITCHING MACHINE RT40
part_name_assigned_by_controlling_agencyBOLT,0.375
NSN5315-00-726-2484
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50129-7 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND B GRADE
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH0.250 INCHES NOMINAL IN
OVERALL WIDTH0.125 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND B GRADE
MATERIALSTEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
MS20066-115Reference document
Same NSN cross-reference
Reference document — Secondary reference
OO-K-220Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 50129-7?
50129-7 is a DISK,VALVE.
What parts can replace 50129-7?
There are 2 known substitutes for 50129-7: MS20066-115, OO-K-220. Substitute compatibility should be verified for your specific system.
What is the NSN for 50129-7?
50129-7 is cataloged in the U.S. Government catalog under NSN 5315-00-726-2484. 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.