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NK525-416R6 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

NK525-416R6: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 2330 OVERALL, head_style: ROUND EXTENDED WASHER, head_height: 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.437 INCHES NOMINAL IN, thread_length: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-159-7967, 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
NK525-416R6
NSN: 5305-00-159-7967
FSC: 5305 — Screws
CAGE: 26233 — NYLOK LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 2330 OVERALL
head_styleROUND EXTENDED WASHER
head_height0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.437 INCHES NOMINAL IN
thread_length0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
fastener_length0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
locking_featurePELLET THREADS
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
NSN5305-00-159-7967
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NK525-416R6 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXTENDED WASHER THICKNESS: 0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
HEAD HEIGHT0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
FASTENER LENGTH0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.500 INCHES NOMINAL IN
THREAD LENGTH0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEROUND EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
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 NK525-416R6?
NK525-416R6 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for NK525-416R6?
NK525-416R6 is cataloged in the U.S. Government catalog under NSN 5305-00-159-7967. 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.