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2-40420-1 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2-40420-1: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, shank_length: 0.231 INCHES NOMINAL IN, overall_length: 1.242 INCHES NOMINAL IN, shank_diameter: 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES OUTSIDE DIAMETER, first_end_style: CHAMFERED. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-709-4131, 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
2-40420-1
NSN: 5315-00-709-4131
NIINs: 007094131, 015705982
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 79U29 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
shank_length0.231 INCHES NOMINAL IN
overall_length1.242 INCHES NOMINAL IN
shank_diameter0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleCHAMFERED
style_designatorSHOULDER
shoulder_diameter0.375 INCHES NOMINAL IN
first_end_locationBOTH ENDS
first_hole_diameter0.076 INCHES NOMINAL IN
second_shank_length0.941 INCHES NOMINAL IN
second_hole_diameter0.076 INCHES NOMINAL IN
NSN5315-00-709-4131
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2-40420-1 · 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
•
SHANK DIAMETER: 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
•
SECOND SHANK DIAMETER: 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
•
SURFACE FINISH: 32.0 MICROINCHES OUTSIDE DIAMETER
•
FIRST END TAPER LENGTH: 0.062 INCHES NOMINAL IN
•
FIRST END LOCATION: BOTH ENDS
•
HOLE ARRANGEMENT STYLE: BOTH END DRILLED
•
FIRST END STYLE: CHAMFERED
•
FIRST HOLE DIAMETER: 0.076 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
SECOND SHANK DIAMETER0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
SURFACE FINISH32.0 MICROINCHES OUTSIDE DIAMETER
FIRST END TAPER LENGTH0.062 INCHES NOMINAL IN
FIRST END LOCATIONBOTH ENDS
HOLE ARRANGEMENT STYLEBOTH END DRILLED
FIRST END STYLECHAMFERED
FIRST HOLE DIAMETER0.076 INCHES NOMINAL IN
SHANK LENGTH0.231 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDER
SUBSTITUTES & CROSS-REFERENCES 1
2-40420Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2-40420-1?
2-40420-1 is a PIN,SHOULDER,HEADLESS.
What parts can replace 2-40420-1?
There is 1 known substitute for 2-40420-1: 2-40420. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-40420-1?
2-40420-1 is cataloged in the U.S. Government catalog under NSN 5315-00-709-4131. 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.