Blind Fasteners (CB / CBS) --- Broaching Fasteners (CKF2 / CKFS2) ---
Part Number - Unified Material Thread Size Total Length Diameter
CB / CBS Steel / Stainless Steel From #4-40 to 1/4-20 From .418 to .647 From .25 to .43
CKF2 / CKFS2 Carbon Steel / Stainless Steel From #2-56 to #10-32 From .125 to .187 From .219 to .375


CB --- Heat Treated Carbon Steel / Finish ZI - Zinc per ASTM B 633 SC1 (5pm), Type III, Colorless
CBS & CKFS2 --- 303 Stainless Steel / Finish Passivated and or tested per ASTM A380
CKF2 --- Carbon Steel / Finish Electro-plated Bright Tin ASTM B 545, Class B With Preservative Coating




Part Number - Metric Material Thread Size Total Length Diameter
CB / CBS Steel / Stainless Steel From M3 x 0.5 to M6 x 1 From 10.57 mil. to 16.51 mil. From 6.35 mil. to 11.1 mil.
CKF2 / CKFS2 Carbon Steel / Stainless Steel From M2 x 0.4 to M5 x 0.8 From 3.03 mil. to 4.53 mil. From 5.56 mil. to 9.53 mil.
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Concealed-Head Standoffs (CCSS / CCSOS) --- Broaching Standoffs (CKFE / CKFSE) --- Grounding Standoffs (CSOSG / CSOAG) --- Connector Standoffs (CDSO / CDSOS)
Part Number - Unified Material Thread Size Total Length Diameter
CCSS / CCSOS Stainless Steel From #4-40 to 1/4-20 From .23 to 1.075 From .250 to .438
CKFE / CKFSE Carbon Steel / Stainless Steel From #4-40 to 3 From .185 to 1.06 From .219 to .281
CSOSG / CSOAG Stainless Steel / Aluminum From #4-40 to #6-32 From .125 to .500 From .250 to .312
CDSO / CDSOS Carbon Steel / Stainless Steel #4-40 .250 to .275 .194


CCSS & CCSOS & CKFSE & CDSOS & CSOSG --- 303 Stainless Steel / Finish Passivated and or tested per ASTM A380
CKFE --- Carbon Steel / Finish Electro-plated Bright Tin ASTM B 545, Class B With Preservative Coating
CDSO --- Heat Treated Carbon Steel / No Finish
CSOAG --- 6061-T6 Aluminum / No Finish



Part Number - Metric Material Thread Size Total Length Diameter
CCSS / CCSOS Stainless Steel From M3 x 0.5 to M6 x 1 From 5.1 mil. to 26.91 mil. From 6.35 mil. to 11.11 mil.
CKFE / CKFSE Carbon Steel / Stainless Steel From M3 x 0.5 to 3 From 4.53 mil. to 17.53 mil. From 5.56 mil. to 8.74 mil.
CSOSG / CSOAG Stainless Steel / Aluminum M3 x 0.5 3 mil. to 12 mil. 6.4 mil.
CDSO / CDSOS Carbon Steel / Stainless Steel M3 x 0.5 7 4.92

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