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10191721-3 — PIN,GROOVED,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10191721-3: PIN,GROOVED,HEADLESS.

The PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.279 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, material: STEEL COMP 440C OVERALL, overall_length: 2.212 INCHES MINIMUM AND 2.217 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES OVERALL, undercut_width: 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN, first_end_style: CHAMFERED. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-221-9268, 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
10191721-3
NSN: 5315-00-221-9268
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
diameter0.279 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
materialSTEEL COMP 440C OVERALL
overall_length2.212 INCHES MINIMUM AND 2.217 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES OVERALL
undercut_width0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
first_end_styleCHAMFERED
hardness_rating53.0 ROCKWELL C MINIMUM AND 57.0 ROCKWELL C MAXIMUM OVERALL
effective_length2.092 INCHES MINIMUM AND 2.097 INCHES MAXIMUM IN
style_designatorGROOVE
surface_treatmentPASSIVATE OVERALL
undercut_diameter0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
first_end_locationBOTH ENDS
NSN5315-00-221-9268
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10191721-3 · 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 FINISH: 32.0 MICROINCHES OVERALL
•
UNDERCUT WIDTH: 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.005 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
•
FIRST END LOCATION: BOTH ENDS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: CHAMFERED
•
HARDNESS RATING: 53.0 ROCKWELL C MINIMUM AND 57.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES OVERALL
UNDERCUT WIDTH0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.005 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
FIRST END LOCATIONBOTH ENDS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLECHAMFERED
HARDNESS RATING53.0 ROCKWELL C MINIMUM AND 57.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 440C,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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 2
5315002219268Reference document
Same NSN cross-reference
Reference document — Informative reference only
10056407Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 10191721-3?
10191721-3 is a PIN,GROOVED,HEADLESS.
What parts can replace 10191721-3?
There are 2 known substitutes for 10191721-3: 5315002219268, 10056407. Substitute compatibility should be verified for your specific system.
What is the NSN for 10191721-3?
10191721-3 is cataloged in the U.S. Government catalog under NSN 5315-00-221-9268. 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.