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021-16655B052 — STUD,PLAIN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

021-16655B052: STUD,PLAIN.

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: COBALT ALLOY, overall_length: 6.625 INCHES NOMINAL IN, thread_direction: RIGHT-HAND NUT THREAD, nominal_thread_size: 0.875 INCHES NUT THREAD IN, thread_quantity_per_inch: 9 NUT THREAD, thread_series_designator: UNIFIED NATIONAL COARSE (UNC) STUD THREAD. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-413-0321, 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
021-16655B052
NSN: 5307-01-413-0321
FSC: 5307 — Studs
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
materialCOBALT ALLOY
overall_length6.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND NUT THREAD
nominal_thread_size0.875 INCHES NUT THREAD IN
thread_quantity_per_inch9 NUT THREAD
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) STUD THREAD
material_document_and_classificationQQ-C-00465 C61400 FED SPEC SINGLE MATERIAL RESPONSE
NSN5307-01-413-0321
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 021-16655B052 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-00465 C61400 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.875 INCHES NUT THREAD IN
•
THREAD QUANTITY PER INCH: 9 STUD THREAD
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-00465 C61400 FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH6.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.875 INCHES NUT THREAD IN
NOMINAL THREAD SIZE0.875 INCHES STUD THREAD IN
THREAD QUANTITY PER INCH9 STUD THREAD
THREAD QUANTITY PER INCH9 NUT THREAD
MATERIALCOBALT ALLOY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
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 021-16655B052?
021-16655B052 is a STUD,PLAIN.
What is the NSN for 021-16655B052?
021-16655B052 is cataloged in the U.S. Government catalog under NSN 5307-01-413-0321. 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.