VB.639-B Three-arm knobs Brass boss, threaded blind hole

Material

Glass-fibre reinforced polyamide based (PA) technopolymer, black colour, matte finish.

VB.639/130: glass-fibre reinforced polypropylene based (PP) technopolymer, black colour, matte finish.

Standard executions

• VB.639-A: black-oxide steel boss, plain blind hole.
• VB.639-B: brass boss, threaded blind hole.
• VB.639-FP: brass boss, threaded pass-through hole.
• VB.639-p: zinc-plated steel threaded stud with chamfered flat end as in UNI 947 : ISO 4753 (see Technical data).
• VB.639-SST: AISI 303 stainless steel boss, threaded blind hole.
• VB.639-FP-SST: AISI 303 stainless steel, threaded pass-through hole.