634K2 — STUD,RECESSED AND STEPPED

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

634K2: STUD,RECESSED AND STEPPED.

The STUD,RECESSED AND STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4140, thread_class: 3A NUT THREAD A, thread_length: 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM NUT THREAD IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM, thread_direction: RIGHT-HAND STUD THREAD, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-988-1540, 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

634K2

NSN: 5307-00-988-1540
FSC: 5307 — Studs
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)

SPECIFICATIONS

material	STEEL COMP 8740 OR STEEL COMP 4140
thread_class	3A NUT THREAD A
thread_length	0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM NUT THREAD IN
hardness_rating	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_direction	RIGHT-HAND STUD THREAD
surface_treatment	CADMIUM OVERALL
nominal_thread_size	0.250 INCHES NUT THREAD IN
thread_pitch_diameters	+0.2900 TO 0.2915 INCHES STUD THREAD IN
thread_quantity_per_inch	28 NUT THREAD
thread_series_designator	UNF NUT THREAD
material_document_and_classification	AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE
NSN	5307-00-988-1540

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD LENGTH: 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM NUT THREAD IN

•

HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM

•

THREAD PITCH DIAMETERS: +0.2900 TO 0.2915 INCHES STUD THREAD IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE

•

THREAD DIRECTION: RIGHT-HAND STUD THREAD

•

NOMINAL THREAD SIZE: 0.250 INCHES NUT THREAD IN

TECHNICAL CHARACTERISTICS

THREAD LENGTH	0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM NUT THREAD IN
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD PITCH DIAMETERS	+0.2900 TO 0.2915 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE
THREAD DIRECTION	RIGHT-HAND STUD THREAD
THREAD DIRECTION	RIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE	0.250 INCHES NUT THREAD IN
NOMINAL THREAD SIZE	0.312 INCHES STUD THREAD IN
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A NUT THREAD A

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: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 634K2?

634K2 is a STUD,RECESSED AND STEPPED.

What is the NSN for 634K2?

634K2 is cataloged in the U.S. Government catalog under NSN 5307-00-988-1540. This indicates validated use in U.S. government and defense supply chains.

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634K2 — STUD,RECESSED AND STEPPED

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