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M-568 — SIGHT,INFINITY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M-568: SIGHT,INFINITY.

The SIGHT,INFINITY is a the manufacturer industrial component. Key specifications include focusing_type: ADJUSTABLE, straight_type_overall_length: 15.37 INCHES NOMINAL IN, accessory_components_and_quantity: DAYSCOPE, LENS COVERS, CR2032 BATTERY, part_name_assigned_by_controlling_agency: DAYSCOPE 5-25X56 ILLUM TREMOR 3. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-192-0589, 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
M-568
NSN: 5305-00-192-0589
NIINs: 001920589, 012311796, 013226605, 014378063, 016646658
FSC: 5305 — Screws
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
focusing_typeADJUSTABLE
straight_type_overall_length15.37 INCHES NOMINAL IN
accessory_components_and_quantityDAYSCOPE, LENS COVERS, CR2032 BATTERY
part_name_assigned_by_controlling_agencyDAYSCOPE 5-25X56 ILLUM TREMOR 3
NSN5305-00-192-0589
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M-568 · 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
•
WIDTH ACROSS FLATS: 0.094 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 126W135 FSCM 22888 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: CUP
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.094 INCHES NOMINAL IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION126W135 FSCM 22888 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLECUP
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS3A A
SUBSTITUTES & CROSS-REFERENCES 2
JH1558AReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
1X485Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M-568?
M-568 is a SIGHT,INFINITY.
What parts can replace M-568?
There are 2 known substitutes for M-568: JH1558A, 1X485. Substitute compatibility should be verified for your specific system.
What is the NSN for M-568?
M-568 is cataloged in the U.S. Government catalog under NSN 5305-00-192-0589. 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.