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3126AS278 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3126AS278: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL, shank_length: 1.250 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.540 INCHES NOMINAL IN, overall_length: 1.990 INCHES NOMINAL IN, shank_diameter: 0.247 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-482-4618, 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
3126AS278
NSN: 5315-01-482-4618
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 072E5 — VERTEX MODERNIZATION AND SUSTAINMENT LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
shank_length1.250 INCHES NOMINAL IN
thread_class2A A
thread_length0.540 INCHES NOMINAL IN
overall_length1.990 INCHES NOMINAL IN
shank_diameter0.247 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
first_end_styleROUND
second_end_styleSQUARE
special_featuresSHOULDER IS .500 HEXAGONAL; SECOND END THREADED
style_designatorSHOULDER
thread_directionRIGHT-HAND
shoulder_diameter0.500 INCHES NOMINAL IN
NSN5315-01-482-4618
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3126AS278 · 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 0.248 INCHES MAXIMUM IN
•
SECOND SHANK DIAMETER: 0.250 INCHES NOMINAL IN
•
FIRST END LOCATION: ROUND END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.540 INCHES NOMINAL IN
•
FIRST END STYLE: ROUND
•
SHANK LENGTH: 1.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDER
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.247 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
SECOND SHANK DIAMETER0.250 INCHES NOMINAL IN
FIRST END LOCATIONROUND END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.540 INCHES NOMINAL IN
FIRST END STYLEROUND
SHANK LENGTH1.250 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A 582, COND A ASSN STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH1.990 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 3126AS278?
3126AS278 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 3126AS278?
3126AS278 is cataloged in the U.S. Government catalog under NSN 5315-01-482-4618. This indicates validated use in U.S. government and defense supply chains.
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