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Technical Data Sheet
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1539876 — Technical Data Sheet

✓ Government record, cited
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE, thread_class: 2A NUT THREAD A, thread_length: 3.720 INCHES MINIMUM AND 3.780 INCHES MAXIMUM NUT THREAD IN, overall_length: 6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN, special_features: 0.650 IN. MIN,0.680 IN.

MAX OF STUD END IS CLASS 2A THREAD FOR STARTING A, style_designator: RECESSED. This part is cataloged in the U.S. Government catalog under NSN 5307-00-003-4187, 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
1539876
NSN: 5307-00-003-4187
FSC: 5307 — Studs
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE
thread_class2A NUT THREAD A
thread_length3.720 INCHES MINIMUM AND 3.780 INCHES MAXIMUM NUT THREAD IN
overall_length6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN
special_features0.650 IN. MIN,0.680 IN. MAX OF STUD END IS CLASS 2A THREAD FOR STARTING A
style_designatorRECESSED
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.625 INCHES STUD THREAD IN
thread_pitch_diameters+0.5716 TO 0.5758 INCHES STUD THREAD IN
thread_quantity_per_inch18 NUT THREAD
thread_series_designatorUNF NUT THREAD
NSN5307-00-003-4187
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1539876 · 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
•
THREAD LENGTH: 1.090 INCHES MINIMUM AND 1.150 INCHES MAXIMUM STUD THREAD IN
•
STYLE DESIGNATOR: RECESSED
•
THREAD PITCH DIAMETERS: +0.5716 TO 0.5758 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE
•
DIAMETER OF RECESSED PORTION OF SHANK: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
THREAD LENGTH1.090 INCHES MINIMUM AND 1.150 INCHES MAXIMUM STUD THREAD IN
THREAD LENGTH3.720 INCHES MINIMUM AND 3.780 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORRECESSED
THREAD PITCH DIAMETERS+0.5716 TO 0.5758 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH6.410 INCHES MINIMUM AND 6.470 INCHES MAXIMUM IN
DIAMETER OF RECESSED PORTION OF SHANK0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.625 INCHES NUT THREAD IN
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-021-9733 5307-00-039-0367 5307-00-061-0087 5307-00-073-5156 5307-00-075-3758 5307-00-080-2016 5307-00-080-2020 5307-01-299-7402
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 1539876?
1539876 is a STUD,RECESSED.
What is the NSN for 1539876?
1539876 is cataloged in the U.S. Government catalog under NSN 5307-00-003-4187. 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.