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4071138 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4071138: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 625 OVERALL, thickness: 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN, hole_diameter: 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN, overall_diameter: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, special_features: NOZZLE SEGMENT LINER F100PW0229 ENGINE SEG/LINER AUGMENTR CONVERGENT, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-318-9245, 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
4071138
NSN: 5310-01-318-9245
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY 625 OVERALL
thickness0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
hole_diameter0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
overall_diameter0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
special_featuresNOZZLE SEGMENT LINER F100PW0229 ENGINE SEG/LINER AUGMENTR CONVERGENT
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-318-9245
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4071138 · 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
•
OVERALL DIAMETER: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: NICKEL ALLOY 625 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
•
THICKNESS: 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESNOZZLE SEGMENT LINER F100PW0229 ENGINE SEG/LINER AUGMENTR CONVERGENT
PERIPHERAL SHAPE STYLEROUND
MATERIALNICKEL ALLOY 625 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
THICKNESS0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
5310PL0787278Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4071138?
4071138 is a WASHER,FLAT.
What parts can replace 4071138?
There is 1 known substitute for 4071138: 5310PL0787278. Substitute compatibility should be verified for your specific system.
What is the NSN for 4071138?
4071138 is cataloged in the U.S. Government catalog under NSN 5310-01-318-9245. 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.