Sems are machine screws and freely-rotating, captive washers manufactured as one assembly. Sems are usually used as locking screws, with the washer providing the locking action. Machine pre-assembly of these two parts may provide cost savings to the end user, especially in high-volume applications for machine screws.
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Diameter

Pitch

Coarse

Length

Material

Class 4.8

Finish

Zinc Plated

Type of Packages

Item #

Item Name

Package Quantity

Web Price

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N/A M5-0.80 X 8 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 2500 $370.24 Add To Cart
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N/A M5-0.80 X 12 METRIC SEM PHILLIPS PAN HEAD W/ SQUARE CONE WASHER CLASS 4.8 ZINC N/A 2500 $403.80 Add To Cart
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N/A M4-0.70 X 20 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 4000 $407.55 Add To Cart
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N/A M4-0.70 X 30 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 2500 $423.68 Add To Cart
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N/A M4-0.70 X 16 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $439.69 Add To Cart
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N/A M4-0.70 X 8 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $464.25 Add To Cart
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N/A M4-0.70 X 20 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $476.44 Add To Cart
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N/A M4-0.70 X 16 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 4000 $482.10 Add To Cart
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N/A M4-0.70 X 10 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $485.63 Add To Cart
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N/A M6-1.00 X 25 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 2000 $485.85 Add To Cart
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N/A M6-1.00 X 16 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 2500 $506.44 Add To Cart
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N/A M4-0.70 X 12 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $506.63 Add To Cart
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N/A M4-0.70 X 8 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $510.94 Add To Cart
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N/A M4-0.70 X 8 METRIC SEM PHILLIPS PAN HEAD W/ SQUARE CONE WASHER CLASS 4.8 ZINC N/A 5000 $514.13 Add To Cart
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N/A M4-0.70 X 10 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $531.94 Add To Cart
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N/A M4-0.70 X 10 METRIC SEM PHILLIPS PAN HEAD W/ SQUARE CONE WASHER CLASS 4.8 ZINC N/A 5000 $535.13 Add To Cart
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N/A M6-1.00 X 10 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 3000 $536.40 Add To Cart
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N/A M6-1.00 X 20 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 2500 $543.86 Add To Cart
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N/A M4-0.70 X 12 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $553.50 Add To Cart
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N/A M4-0.70 X 12 METRIC SEM PHILLIPS PAN HEAD W/ SQUARE CONE WASHER CLASS 4.8 ZINC N/A 5000 $557.06 Add To Cart
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N/A M6-1.00 X 12 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 3000 $559.01 Add To Cart
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N/A M5-0.80 X 10 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $561.56 Add To Cart
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N/A M5-0.80 X 8 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $568.13 Add To Cart
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N/A M6-1.00 X 10 METRIC SEM PHILLIPS PAN HEAD W/ INTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 3000 $571.95 Add To Cart
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N/A M5-0.80 X 12 METRIC SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER CLASS 4.8 ZINC N/A 5000 $586.88 Add To Cart
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