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52B2085-1 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

52B2085-1: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: ROUND W/WRENCH FLATS, thread_class: 2A A, head_diameter: 3.000 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, width_between_flats: 2.500 INCHES NOMINAL IN, nominal_thread_diameter: 1.375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-677-7356, 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
52B2085-1
NSN: 5306-00-677-7356
FSC: 5306 — Bolts
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
head_styleROUND W/WRENCH FLATS
thread_class2A A
head_diameter3.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats2.500 INCHES NOMINAL IN
nominal_thread_diameter1.375 INCHES IN
thread_quantity_per_inch12
thread_series_designatorUNF
NSN5306-00-677-7356
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 52B2085-1 · 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
•
NOMINAL THREAD DIAMETER: 1.375 INCHES IN
•
HEAD STYLE: ROUND W/WRENCH FLATS
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 2.500 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 12
•
THREAD SERIES DESIGNATOR: UNF
•
HEAD DIAMETER: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NOMINAL THREAD DIAMETER1.375 INCHES IN
HEAD STYLEROUND W/WRENCH FLATS
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS2.500 INCHES NOMINAL IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH12
THREAD SERIES DESIGNATORUNF
HEAD DIAMETER3.000 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
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 52B2085-1?
52B2085-1 is a BOLT,SHOULDER.
What is the NSN for 52B2085-1?
52B2085-1 is cataloged in the U.S. Government catalog under NSN 5306-00-677-7356. 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.