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M659 — TELESCOPE,STRAIGHT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

M659: TELESCOPE,STRAIGHT.

The TELESCOPE,STRAIGHT is a the manufacturer industrial component. Key specifications include focusing_type: ADJUSTABLE, magnification: 4.0 NOMINAL AND 20.0 NOMINAL, special_features: 10 YEAR WARRANTY, field_view_coverage: AT 100 YARDS, 4X-23.6 FEET FT, reticle_style_designator: HORIZONTALLY GRADUATED FROM CENTER, straight_type_overall_length: 13.9 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-263-6796, 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
M659
NSN: 3120-01-263-6796
NIINs: 012636796, 017327817
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 38589 — MARTIN-DECKER TOTCO, INC DBA M/D TOTCO (USA)
SPECIFICATIONS
focusing_typeADJUSTABLE
magnification4.0 NOMINAL AND 20.0 NOMINAL
special_features10 YEAR WARRANTY
field_view_coverageAT 100 YARDS, 4X-23.6 FEET FT
reticle_style_designatorHORIZONTALLY GRADUATED FROM CENTER
straight_type_overall_length13.9 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyRANGING-VARIABLE POWER SCOPE
NSN3120-01-263-6796
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: M659 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
D516B ITEM 46Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 M659?
M659 is a TELESCOPE,STRAIGHT.
What parts can replace M659?
There is 1 known substitute for M659: D516B ITEM 46. Substitute compatibility should be verified for your specific system.
What is the NSN for M659?
M659 is cataloged in the U.S. Government catalog under NSN 3120-01-263-6796. This indicates validated use in U.S. government and defense supply chains.
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