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561-6404326-33 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

561-6404326-33: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.080 INCHES NOMINAL0.080 INCHES NOMINAL IN, diameter: 0.1866 INCHES MINIMUM AND 0.1866 INCHES MINIMUM AND 0.1871 INCHES MAXIMUM0.1871 INCHES MAXIMUM IN, head_style: PAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)PAN NO.

2 (R1 NOT REQUIRED IN ITEM DESCRIPTION), undercut_width: 0.029 INCHES MINIMUM AND 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM0.032 INCHES MAXIMUM IN, first_end_style: CHAMFEREDCHAMFERED, effective_length: 0.380 INCHES MINIMUM AND 0.380 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM IN. This part is cataloged in the U.S. Government catalog under NSN 5315-01-378-3165, 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
561-6404326-33
NSN: 5315-01-378-3165
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
height0.080 INCHES NOMINAL0.080 INCHES NOMINAL IN
diameter0.1866 INCHES MINIMUM AND 0.1866 INCHES MINIMUM AND 0.1871 INCHES MAXIMUM0.1871 INCHES MAXIMUM IN
head_stylePAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)PAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)
undercut_width0.029 INCHES MINIMUM AND 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM0.032 INCHES MAXIMUM IN
first_end_styleCHAMFEREDCHAMFERED
effective_length0.380 INCHES MINIMUM AND 0.380 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM IN
style_designatorGROOVEGROOVE
pin_head_diameter0.310 INCHES NOMINAL0.310 INCHES NOMINAL IN
under_head_length0.480 INCHES NOMINAL0.480 INCHES NOMINAL IN
undercut_diameter0.125 INCHES MINIMUM AND 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM0.127 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL45.0 DEGREES NOMINAL
second_undercut_width0.030 INCHES NOMINAL0.030 INCHES NOMINAL IN
NSN5315-01-378-3165
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 561-6404326-33 · 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 MINIMUM AND 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM0.032 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.125 INCHES MINIMUM AND 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM0.127 INCHES MAXIMUM IN
•
UNDER HEAD LENGTH: 0.480 INCHES NOMINAL0.480 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFEREDCHAMFERED
•
STYLE DESIGNATOR: GROOVEGROOVE
•
PIN HEAD DIAMETER: 0.310 INCHES NOMINAL0.310 INCHES NOMINAL IN
•
DIAMETER: 0.1866 INCHES MINIMUM AND 0.1866 INCHES MINIMUM AND 0.1871 INCHES MAXIMUM0.1871 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.029 INCHES MINIMUM AND 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM0.032 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN
UNDERCUT DIAMETER0.125 INCHES MINIMUM AND 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM0.127 INCHES MAXIMUM IN
UNDER HEAD LENGTH0.480 INCHES NOMINAL0.480 INCHES NOMINAL IN
FIRST END STYLECHAMFEREDCHAMFERED
STYLE DESIGNATORGROOVEGROOVE
PIN HEAD DIAMETER0.310 INCHES NOMINAL0.310 INCHES NOMINAL IN
DIAMETER0.1866 INCHES MINIMUM AND 0.1866 INCHES MINIMUM AND 0.1871 INCHES MAXIMUM0.1871 INCHES MAXIMUM IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL45.0 DEGREES NOMINAL
EFFECTIVE LENGTH0.380 INCHES MINIMUM AND 0.380 INCHES MINIMUM AND 0.385 INCHES MAXIMUM0.385 INCHES MAXIMUM 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 1
561-6404326 FIND 33Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 561-6404326-33?
561-6404326-33 is a PIN,GROOVED,HEADED.
What parts can replace 561-6404326-33?
There is 1 known substitute for 561-6404326-33: 561-6404326 FIND 33. Substitute compatibility should be verified for your specific system.
What is the NSN for 561-6404326-33?
561-6404326-33 is cataloged in the U.S. Government catalog under NSN 5315-01-378-3165. 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.