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12273990-2 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12273990-2: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.070 INCHES NOMINAL IN, diameter: 0.374 INCHES NOMINAL IN, material: STEEL COMP 410 OVERALL, head_style: FLUSH, undercut_width: 0.029 INCHES NOMINAL IN, first_end_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-074-8975, 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
12273990-2
NSN: 5315-01-074-8975
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
height0.070 INCHES NOMINAL IN
diameter0.374 INCHES NOMINAL IN
materialSTEEL COMP 410 OVERALL
head_styleFLUSH
undercut_width0.029 INCHES NOMINAL IN
first_end_styleSQUARE
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
effective_length1.215 INCHES NOMINAL IN
style_designatorGROOVE
pin_head_diameter0.750 INCHES NOMINAL IN
under_head_length1.360 INCHES NOMINAL IN
undercut_diameter0.340 INCHES NOMINAL IN
NSN5315-01-074-8975
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12273990-2 · 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
•
UNDERCUT WIDTH: 0.029 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.340 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 1.360 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: GROOVE
•
PIN HEAD DIAMETER: 0.750 INCHES NOMINAL IN
•
DIAMETER: 0.374 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.029 INCHES NOMINAL IN
UNDERCUT DIAMETER0.340 INCHES NOMINAL IN
UNDER HEAD LENGTH1.360 INCHES NOMINAL IN
FIRST END STYLESQUARE
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
PIN HEAD DIAMETER0.750 INCHES NOMINAL IN
DIAMETER0.374 INCHES NOMINAL IN
EFFECTIVE LENGTH1.215 INCHES NOMINAL IN
HEAD STYLEFLUSH
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12273990-2?
12273990-2 is a PIN,GROOVED,HEADED.
What is the NSN for 12273990-2?
12273990-2 is cataloged in the U.S. Government catalog under NSN 5315-01-074-8975. 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.