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Technical Data Sheet
PartsTable / COMPONENT / 58-11-109-56
58-11-109-56 ✓ Verified by PartsTable
— · 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 THUMBSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.750 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-655-7365, 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
58-11-109-56
NSN: 5305-00-655-7365
FSC: 5305
CAGE: 94222 — SOUTHCO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.750 INCHES NOMINAL IN
thread_length0.375 INCHES MINIMUM IN
fastener_length0.938 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCHROMIUM OVERALL
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch20
NSN5305-00-655-7365
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 58-11-109-56 · 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: 0.250 INCHES IN
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: CHROMIUM OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 0.375 INCHES MINIMUM IN
•
HEAD STYLE: KNURLED NO. 1
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.250 INCHES IN
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTCHROMIUM OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD HEIGHT0.250 INCHES NOMINAL IN
THREAD CLASS2A A
THREAD LENGTH0.375 INCHES MINIMUM IN
HEAD STYLEKNURLED NO. 1
HEAD DIAMETER0.750 INCHES NOMINAL IN
FASTENER LENGTH0.938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
W107PC4Interchangeable
interchangeable cross-reference
interchangeable
51045PC19Interchangeable
interchangeable cross-reference
interchangeable
85095PC14Interchangeable
interchangeable cross-reference
interchangeable
1-108-1Interchangeable
interchangeable cross-reference
interchangeable
UG335UInterchangeable
interchangeable cross-reference
interchangeable
TRU-5742Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 58-11-109-56?
58-11-109-56 is a THUMBSCREW.
What parts can replace 58-11-109-56?
There are 18 known substitutes for 58-11-109-56: W107PC4, 51045PC19, 85095PC14 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 58-11-109-56?
58-11-109-56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-655-7365. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026