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PB52057-2 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PB52057-2: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.046 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, thread_length: 0.168 INCHES MINIMUM IN, screw_material: COPPER ALLOY 360. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-487-7121, 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
PB52057-2
NSN: 5305-00-487-7121
FSC: 5305 — Screws
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.046 INCHES NOMINAL IN
thread_class3A A
head_diameter0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
thread_length0.168 INCHES MINIMUM IN
screw_materialCOPPER ALLOY 360
fastener_length0.218 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.073 INCHES IN
thread_quantity_per_inch72
thread_series_designatorUNF
NSN5305-00-487-7121
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PB52057-2 · 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
•
HEAD HEIGHT: 0.046 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.218 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4610 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.168 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.073 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: COPPER ALLOY 360
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.046 INCHES NOMINAL IN
FASTENER LENGTH0.218 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4610 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.168 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.073 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALCOPPER ALLOY 360
INTERNAL DRIVE STYLESLOT
THREAD CLASS3A A
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
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 PB52057-2?
PB52057-2 is a SCREW,MACHINE.
What is the NSN for PB52057-2?
PB52057-2 is cataloged in the U.S. Government catalog under NSN 5305-00-487-7121. 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.