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25953 — WEB,STRUCTURAL COMPONENT,AIRCRAF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

25953: WEB,STRUCTURAL COMPONENT,AIRCRAF.

WEB,STRUCTURAL COMPONENT,AIRCRAF. Key specifications include overall_length: 1.000 INCHES NOMINAL IN, special_features: GBBU, part_name_assigned_by_controlling_agency: AIR DRYER. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-123-6381, 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
25953
NSN: 5310-01-123-6381
NIINs: 011236381, 011238010, 012989968, 016448319, 017151443, 017163101, 017281417
FSC: 5310 — Nuts and Washers
CAGE: 89944 — ELBITAMERICA, INC. (USA)
SPECIFICATIONS
overall_length1.000 INCHES NOMINAL IN
special_featuresGBBU
part_name_assigned_by_controlling_agencyAIR DRYER
NSN5310-01-123-6381
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25953 · 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
•
THREAD SERIES: UNF
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HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
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THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 0.190 INCHES IN
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NUT DIAMETER: 0.302 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN
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WIDTH BETWEEN FLATS: 0.250 INCHES NOMINAL IN
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NUT HEIGHT: 0.309 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
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INTERNAL DRIVE STYLE: DOUBLE HEXAGON
TECHNICAL CHARACTERISTICS
THREAD SERIESUNF
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT DIAMETER0.302 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.250 INCHES NOMINAL IN
NUT HEIGHT0.309 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
INTERNAL DRIVE STYLEDOUBLE HEXAGON
COUNTERSINK ANGLE45.0 DEGREES NOMINAL OVERALL
NUT STYLEINTERNAL WRENCHING
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 25953?
25953 is a WEB,STRUCTURAL COMPONENT,AIRCRAF.
What is the NSN for 25953?
25953 is cataloged in the U.S. Government catalog under NSN 5310-01-123-6381. This indicates validated use in U.S. government and defense supply chains.
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