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ST2951-12 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST2951-12: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718, thread_class: 3A STUD THREAD A, thread_length: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN, overall_length: 0.960 INCHES NOMINAL IN, locking_feature: KEY INSERTS, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-486-0101, 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
ST2951-12
NSN: 5307-01-486-0101
FSC: 5307 — Studs
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718
thread_class3A STUD THREAD A
thread_length0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN
overall_length0.960 INCHES NOMINAL IN
locking_featureKEY INSERTS
style_designatorLOCKED IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
nominal_thread_size0.250 INCHES STUD THREAD IN
end_item_identificationF-119 ENGINE
thread_quantity_per_inch28 NUT THREAD
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD
furnished_items_and_quantity2 SELF BROACHING LOCKING KEES
NSN5307-01-486-0101
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST2951-12 · 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
•
DISTANCE FROM SERRATED PORTION TO NUT END: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN
•
STYLE DESIGNATOR: LOCKED IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
NOMINAL THREAD SIZE: 0.250 INCHES STUD THREAD IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM SERRATED PORTION TO NUT END0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
THREAD LENGTH0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN
THREAD LENGTH0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORLOCKED IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5662 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.960 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
NOMINAL THREAD SIZE0.250 INCHES STUD THREAD IN
DISTANCE FROM SERRATED PORTION TO STUD END0.750 INCHES NOMINAL IN
LOCKING FEATUREKEY INSERTS
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 3
ST2952-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST2953-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
KNS10088-4-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST2951-12?
ST2951-12 is a STUD,LOCKED IN.
What parts can replace ST2951-12?
There are 3 known substitutes for ST2951-12: ST2952-12, ST2953-12, KNS10088-4-12. Substitute compatibility should be verified for your specific system.
What is the NSN for ST2951-12?
ST2951-12 is cataloged in the U.S. Government catalog under NSN 5307-01-486-0101. This indicates validated use in U.S. government and defense supply chains.
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