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255757 — STEM,FLUID VALVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

255757: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY STEM, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDS, valve_operation_method: MANUAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-406-9778, 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
255757
NSN: 5310-00-406-9778
NIINs: 004069778, 011254578, 011272661, 011451862, 013121842
FSC: 5310 — Nuts and Washers
CAGE: 96487 — VALCOR ENGINEERING CORPORATION (USA)
SPECIFICATIONS
materialNICKEL ALLOY STEM
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDS
valve_operation_methodMANUAL
NSN5310-00-406-9778
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 255757 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
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MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-777 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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OUTSIDE DIAMETER: 0.367 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.006 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
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MATERIAL: STEEL COMP 1095 OVERALL
•
HOLE DIAMETER: 0.265 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.030 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-777 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.367 INCHES NOMINAL IN
MATERIAL THICKNESS0.006 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1095 OVERALL
HOLE DIAMETER0.265 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
W0367-006CADPReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 255757?
255757 is a STEM,FLUID VALVE.
What parts can replace 255757?
There is 1 known substitute for 255757: W0367-006CADP. Substitute compatibility should be verified for your specific system.
What is the NSN for 255757?
255757 is cataloged in the U.S. Government catalog under NSN 5310-00-406-9778. 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.