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Screw Size Chart

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Du-Bro Products
Sullivan Products



SOCKET Machine Screws Standard


Servo Horn (Arm) Screws

SELF TAPPING (Pointy Screws)
  all head styles

NUTS (Lock, Hex and Blind (T) nuts)

Brass Threaded Inserts for Wood

WASHERS....Flat and Lock
Rubber Backed Bonded Washers

NYLON Hardware

METRIC Socket Head Cap Screws

Metric Button Socket Screws
Metric Flat Hd. (countersink) Skts
Metric Nuts
Metric Flat and Lock Washers
Metric Set Screws

STAINLESS Assortments

Stainless Socket Heads
Stainless Nuts
Stainless Washers

Stainless Metric Socket Heads
Stainless Metric Nuts
Stainless Metric Washers

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Flat and Lock (Split) Washers
Lock washers are surprisingly effective at stopping screws from vibrating loose.

Buying tip: The washer size should match the first number in the screw size. As an example, a #4 washer will fit a 4-40 Socket Head and a #4 Sheet Metal Screw, etc.

After entering the number of packages that you want for each item, simply click the "Add To Basket" button.

Please note: If you need a variety of standard hardware, you might want to consider our NEW Assortment #SH93 WASHERS....Flat and Lock

Click button after adding quantities!

Code Name   Price Quantity
635 #0 Flat Washers..Stainless Steel...50pcs.   $3.21
636 #2 Flat Washers..100pcs.   $2.10
637 #3 Flat Washers..50pcs   $1.81
638 #4 Flat Washers..100pcs.   $2.13
639 #5 Flat Washers..50pcs   $2.31
640 #6 Flat Washers..100pcs.   $2.37
642 #8 Flat Washers..50pcs.   $1.52
644 #10 Flat Washers..50pcs.   $1.85
646 #1/4 Flat Washers..50pcs.   $2.20
647 #2 Lock (split) Washers..100pcs.   $2.10
6473 #3 Lock (split) Washers..50pcs   $2.15
648 #4 Lock (split) Washers..100pcs.   $2.15
6483 #5 Lock (split) Washers..50pcs   $2.10
649 #6 Lock (split) Washers..100pcs.   $2.31
650 #8 Lock (split) Washers..50pcs.   $1.76
651 #10 Lock (split) Washers..50pcs.   $2.10
652 #1/4 Lock (split) Washers..50pcs.   $2.45