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59-0253 — LOCK,FLUSH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

59-0253: LOCK,FLUSH.

The LOCK,FLUSH is a the manufacturer industrial component. Key specifications include special_features: INCLUEDS WASHER AND NUT, end_item_identification: 4940-016011928, part_name_assigned_by_controlling_agency: LOCK,FLUSH. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-598-6551, 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
59-0253
NSN: 5315-00-598-6551
NIINs: 005986551, 016754692
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
special_featuresINCLUEDS WASHER AND NUT
end_item_identification4940-016011928
part_name_assigned_by_controlling_agencyLOCK,FLUSH
NSN5315-00-598-6551
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 59-0253 · 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
•
STYLE DESIGNATOR: STANDARD
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MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
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DIAMETER: 0.438 INCHES NOMINAL IN
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NONDEFINITIVE SPEC/STD DATA: B TYPE
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SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
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UNDERLOOP LENGTH: 6.000 INCHES NOMINAL IN
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MATERIAL: STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
•
POINT TYPE: EXTENDED PRONG MITRE END
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTANDARD
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
DIAMETER0.438 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAB TYPE
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
UNDERLOOP LENGTH6.000 INCHES NOMINAL IN
MATERIALSTEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
POINT TYPEEXTENDED PRONG MITRE END
SUBSTITUTES & CROSS-REFERENCES 2
NASM24665Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS24665-850Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 59-0253?
59-0253 is a LOCK,FLUSH.
What parts can replace 59-0253?
There are 2 known substitutes for 59-0253: NASM24665, MS24665-850. Substitute compatibility should be verified for your specific system.
What is the NSN for 59-0253?
59-0253 is cataloged in the U.S. Government catalog under NSN 5315-00-598-6551. 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.