PartsTable
Technical Data Sheet
2-56X1-8 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FILLISTER, head_height: 0.066 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.124 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, thread_length: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, screw_material: PLASTIC POLYAMIDE NYLON. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-151-3555, 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
2-56X1-8
NSN: 5305-00-151-3555
FSC: 5305
CAGE: 83385 — MICRODOT MFG INC GREER-CENTRAL DIV (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.066 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.124 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
screw_materialPLASTIC POLYAMIDE NYLON
fastener_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.086 INCHES IN
thread_quantity_per_inch56
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-151-3555
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2-56X1-8 · 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 SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 56
SCREW MATERIAL: STEEL OR STEEL COMP 1010
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
HEAD HEIGHT: 0.069 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH56
SCREW MATERIALSTEEL OR STEEL COMP 1010
NOMINAL THREAD DIAMETER0.086 INCHES IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
HEAD HEIGHT0.069 INCHES MAXIMUM IN
FASTENER LENGTH0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
6116Interchangeable
interchangeable cross-reference
interchangeable
61-1-6REVBInterchangeable
interchangeable cross-reference
interchangeable
61-1-6BInterchangeable
interchangeable cross-reference
interchangeable
389934PC6116Interchangeable
interchangeable cross-reference
interchangeable
E38933-7PC42Interchangeable
interchangeable cross-reference
interchangeable
E38933-24PC6116Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-56X1-8?
2-56X1-8 is a SCREW,MACHINE.
What parts can replace 2-56X1-8?
There are 17 known substitutes for 2-56X1-8: 6116, 61-1-6REVB, 61-1-6B and 14 more. Substitute compatibility should be verified for your specific system.
Is 2-56X1-8 still available?
2-56X1-8 is currently cancelled.
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