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40R38-M07-F09 — NUT,PLAIN,SPLINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

40R38-M07-F09: NUT,PLAIN,SPLINE.

The NUT,PLAIN,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: SPLINE, nut_height: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, nut_diameter: 0.872 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN, pilot_length: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-304-9461, 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
40R38-M07-F09
NSN: 5310-01-304-9461
FSC: 5310 — Nuts and Washers
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleSPLINE
nut_height0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
nut_diameter0.872 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
pilot_length0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.479 INCHES MINIMUM AND 0.482 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.375 INCHES IN
counterbore_diameter0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM FIRST END IN
NSN5310-01-304-9461
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 40R38-M07-F09 · 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-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM FIRST END IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT DIAMETER: 0.872 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
•
COUNTERBORE DIAMETER: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM FIRST END IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM FIRST END IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT DIAMETER0.872 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN
COUNTERBORE DIAMETER0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM FIRST END IN
PILOT DIAMETER0.479 INCHES MINIMUM AND 0.482 INCHES MAXIMUM IN
PILOT LENGTH0.120 INCHES MINIMUM AND 0.130 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 3
6258C-SS-3716Reference document
Same NSN cross-reference
Reference document — Secondary reference
400041-SS-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
6258C-SS-3716-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· 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 40R38-M07-F09?
40R38-M07-F09 is a NUT,PLAIN,SPLINE.
What parts can replace 40R38-M07-F09?
There are 3 known substitutes for 40R38-M07-F09: 6258C-SS-3716, 400041-SS-12, 6258C-SS-3716-7. Substitute compatibility should be verified for your specific system.
What is the NSN for 40R38-M07-F09?
40R38-M07-F09 is cataloged in the U.S. Government catalog under NSN 5310-01-304-9461. 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.