We have many SEMS screws on
the SEMS Machine Screws
web store. Some SEMS have a single washer such as split lock washer, flat
washers, internal tooth lock washer, external tooth lock washer and others
have a double washer consisting of a flat washer and a split lock washer.
We have them available in metric and inch sizes, as well as having Torx
drive (i.e. star and six-lobe) in SEMS.
Torx drive screws are generally
concentrated in our Torx Screws
web store. We have both Machine Screws and Cap Screws as well as Thread
Forming Screws, Thread Cutting Screws and Self-Tapping Screws on this
website. You can purchase online which is easier, faster and more accurate
or you can place your orders by fax or toll free phone. Torx bolts and
screws are very popular in the automobile industry, sheet metal industry and
plastics industry. The stainless steel screw is the most popular although
all of the sizes are also available in alloy steel with black oxide finish.
Metric Screws web store has quite an extensive collection of metric
fasteners such as metric machine screws, metric bolts, metric machine screw
nuts, metric machine screw washers, metric thread forming screws, metric
socket set screws, socket head cap screws, button head cap screws, flat head
cap screws and metric hex wrenches. We also have metric bolts with in both
coarse thread and fine thread as well as partial thread and full thread. A
metric bolt size over a wide range is listed on the web site.
Cap Screws web site has the standard hex head bolts, socket head cap
screws, button head cap screws and flat head cap screws as well as a variety
of specialty fasteners. You can find Carriage Bolts with square neck or ribbed
neck. You can find an Elevator Bolt with No. 1 Norway head, No. 3 Eclipse head
or Fanged head. There are Grade 8 Frame Bolts in both coarse thread and fine
thread. Grade 5 and Grade 8 Plow Bolts, Step Bolts and Structural Bolts as
well as Grade 2 and 5.1 Flange Bolts can also be found on this web site. You
can also find Grade 2, Grade 5 and Grade 8 Tap Bolts (full thread) at this web
store. Cap screw nuts and cap screw washers can be found on the machine screws
web site. Most of these bolts are steel/zinc but we also stock stainless steel
As you will see on our
Security Screws web
site, there are many kinds of security screws. We specialize in the Hex Pin
and Torx Pin variety of security screw. We have an extensive inventory of
Torx Pin security screws and a modest inventory of Hex Pin security screws.
On the web site you will find machine screws, cap screws, self-tapping
screws, thread forming screws and thread cutting screws with the majority
being button head cap screws and flat head cap screws. Sometimes you may see
these screws listed as tamper proof screw or tamperproof screw.
Self-Tapping Screws web site you will find Type A and Type AB sharp point
self-tapping screws, Type B blunt point self-tapping screws, self-piercing
screws and Type B High Low Thread self-tapping screws, These screws are also
listed without the hyphen i.e., a self tapping screw and sometimes referred
to as a sheet metal screw. We have pan head, flat head, hex head and hex
washer head screws. Some are 410 stainless steel, some are case hardened steel
and some are 18-8 stainless steel. Finishes include the standard plain finish, zinc plated,
black oxide and nickel.
||There are generally two types of threads:
- Machine screw threads where the threads are close together and the screw
will normally thread into a nut,
- Wood screw thread where the threads
are far apart and the screw will normally be inserted into an unthreaded
hole where it makes it own threads as it is inserted.
Wood Screws web site you
will find many different types of screws but all with wood screw type
threads. There are wood screws in steel/zinc plated, stainless steel and
brass. We also have drywall screws, particle board screws, deck screws,
framing screws, dowel screws, hanger bolts and lag bolts.
Military Screws are
generally the same as some commercial screws with a few exceptions.
Generally military screws are manufactured in the USA or Canada, they are of
a higher quality, they are often Cadmium plated and the flat head screws
have a 100 degree countersink. Normal commercial flat head screws have 82
degrees on the countersink and Metric screws have 90 degrees on the
countersink. Military screws are generally more expensive than commercial
counterparts. We have Pan Head screws, Flat Head screws, Fillister head
screws, Socket Head Cap Screws and Hex Head Bolts on this web site.
Screwdrivers, screwdriver bits, adapters and wrenches as required by our
customers who purchase screws. These are generally high quality tools and are
reasonably priced to benefit our current customers. We also provide screwdriver
bits for a wide variety of drive types although the Torx Socket, Torx Socket
Pin Security, Phillips, Slotted, Pozidriv, Hex Socket, Hex Socket Pin Security
and Square drive are the most popular. Clutch, Frearson, Torq-Set, Hi-Torque,
Sel-O-Fit and Tri-Wing are also available on this web site.
We made a dedicated web site for
Fasteners and feature Hex Head Bolts, Nuts and Washers. These are
generally #651 silicon bronze bolts and nuts. The washers are generally
phosphor bronze. This type of fastener is generally used in the electrical
industry where good conductivity is needed as well as in marine applications
where corrosion resistance is required.
Our Pushnuts web site
specializes primarily in round pushnuts for threaded fasteners and
unthreaded shafts, rectangular speed nuts for machine screw and self-tapping
screw applications and nylon PUSHnTWIST nuts which can be pushed on and
tightened with less than 360 degrees of motion.
We expect to open new stores in the next
year that will specialize in stainless steel fasteners, thread cutting
screws, thread forming screws, self-drilling screws and black oxide screws.
We also expect to expand our offerings in Torx head fasteners and add to our
metric machine screw base. Our other metric screw and Torx screw base will
also be expanded. The metric fastener is being accepted in the USA much
faster in recent years and we expect that trend to continue.