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Technical Data Sheet
PartsTable / COMPONENT / 20-156
20-156 ✓ Verified by PartsTable
Braun · 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

- ULTRALIT ® glass lens.<br>- Magnification: 10x.<br>- Lens diameter: 42 mm.<br>- Exit pupil: 5.25 mm.<br>- Eye relief: 18 mm.<br>- Field of view: 7.4°, 129 m/1000 m.<br>- Close focus distance: 1.2 m.<br>- Dimensions: 140 x 110 x 51 mm.<br>- Weight: 780 g. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-175-5109, 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
20-156
NSN: 5305-00-175-5109
FSC: 5305
CAGE: 94990 — MOTOROLA INC. DBA INTEGRATED INFORMATION SYSTEMS GROUP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
point_typeCONVENTIONAL
point_angle118.0 DEGREES NOMINAL
shank_styleSTANDARD TAPER W/TANG
flute_length10.375 INCHES NOMINAL IN
flute_quantity2
overall_length17.375 INCHES NOMINAL IN
special_featuresTAPER SHANK LG; FRACTIONAL SIZE 1-7/8
cutting_end_styleGENERAL PURPOSE
nominal_cutting_diameter1.8750 INCHES IN
cutting_rotation_directionRIGHT-HAND
specification/standard_data05047-ASME B94.11M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5305-00-175-5109
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20-156 · Braun ⚠ 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
110 1-7/8Interchangeable
interchangeable cross-reference
interchangeable
402Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
20156Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-156?
20-156 is a CONDUIT,NONMETALLIC,FLEXIBLE manufactured by Braun.
What parts can replace 20-156?
There are 4 known substitutes for 20-156: 110 1-7/8, 402, GGG-D-751 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-156?
20-156 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-175-5109. 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