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    Products   Hardware, Fasteners, Constant Force Springs and Other Miscellaneous Components

SDP/SI offers a wide variety of hardware components and other unique items are available off-the-shelf. Modifications or custom designs are available if standard items don't meet your needs. Inch and metric sized fasteners are offered in. various configurations, materials and sizes. Get precision socket head shoulder screws, non- corrosive molded machine screws, Long-Lok spring plungers, metal threaded rods, plastic threaded rods and much more.

Constant Force Springs and Spring Products are used in. a wide variety of applications including medical, aerospace, point-of-purchase, door and window manufacturing. SDP/SI offers stainless steel extension springs, Neg'ator® spring motors, and compact sized spring-powered reels for point-of-purchase displays. Also available are base-mounted spring powered reels for counterbalances, arbor-mounted spring powered reels and base-mounted Neg'ator® spring motor assemblies.

Hardware items such as knobs, handles, shims, spacers, retaining rings, washers, extension and compression springs can be found in. our online catalog. SDP/SI also offers an assortment of Miscellaneous and Unique Components for the design engineer.














PRECISION FINE THREADED SCREWS:




Precision Screws







PRECISION ANTI-BACKLASH SPRINGS:




Commercial Anti-Backlash Springs

AVAILABLE IN:

Materials: Stainless Steel
Max. Angular Deflection Deg. ± 10%: 18 in. - 40 in.
Max. Mandrel Size: 0.189 in. - 0.792 in.










COMMERCIAL BELLEVILLE SPRING WASHERS:




Commercial Belleville Spring Washers

AVAILABLE IN:

Inner Diameter Min.: 0.093 in. - 0.750 in.
Outer Diameter Max.: 0.187 in. - 1.500 in.
**Priced Per 10 Pieces













COMMERCIAL ADJUSTABLE CAMS, MOLDED CAMS, & CAM ASSEMBLIES:




Commercial Cams

AVAILABLE IN:

Bore Size: 0.125 in. (3mm) - 0.5010 in. (6mm)
Rise Per 15° (molded only): 0.00 in. (0.0mm) - 0.04 in. (1.0mm)













COMMERCIAL CAP SCREWS:




Commercial Cap Screws

AVAILABLE IN:

Material: Stainless Steel, Nylon, Steel
Length: 1/8 in. (3mm) - 2 in. (70mm)
**Priced Per 100 Pieces













METAL AND PLASTIC CAM FOLLOWERS:




Plastic Cam Followers

AVAILABLE IN:

Stud Length: 0.28125 in.(6mm) - 2.250 in.(36.5mm)
Roller Diameter: 0.25 in.(5mm) - 2.25 in.(40mm)
Stud Diameter: 0.1875 in.(6mm) - 1.00 in.(18mm)


Injection molded from high-performance plastics, these bearings are used in. various applications where lubricated metal bearings are not suitable. They are lightweight, vibration dampening and provide excellent performance in. water, chemicals, and dusty












COMMERCIAL CONSTANT FORCE SPRINGS:




Commercial Constant Force Springs

AVAILABLE IN:

Load (±10): .23 - 40.90 lbs
Band Length: 10 in. - 69 in.
Width: 0.1875 in. - 2.0000 in.













PRECISION COMPRESSION SPRINGS:




Precision Compression Springs

AVAILABLE IN:

Outer Diameter: 0.057 in. (2.25mm) - 0.720 in. (18.30mm)
Wire Diameter: 0.006 in. (0.25mm) - 0.072 in. (2.00mm)
Free Length: 0.25 in. (6.5mm) - 2.00 in. (40.0mm)













PRECISION DIALS & DRUM DIALS:




Precision Dials

AVAILABLE IN:

Outer Diameter: 0.99 in. - 4.00 in.
Number of Graduations: Blank - 360
Inner Diameter: 0.375 in.













PRECISION ELECTROMECHANICAL LIMIT STOPS:




Precision Electromechanical Limit Stops

AVAILABLE IN:

Rotation Limit Degrees: 0 - 15,150
Max Torque Capacity: 150 ozf in.













PRECISION EXTENSION SPRINGS:




Precision Extension Springs

AVAILABLE IN:

Outer Diameter: 0.063 in. (2.5mm) - 1.000 in. (19.0mm)
Free Length: 0.25 in. (9.5mm) - 5.00 in. (130mm)













PRECISION FLEXI-HINGES:




Precision Flexi-Hinges

AVAILABLE IN:

Outer Diameter: 0.125 in. - 1.000 in.
Length: 0.2 in. - 1.6 in.
Spring Rating: 0.0003 - 7.8023 lbf in. / deg













PRECISION GENEVA MECHANISMS:




Precision Geneva Mechanisms

AVAILABLE IN:

Driver Motion: 180° - 360°
Intermittent Driven Motion: 45° - 90°
Number of Points: 4 - 8













PRECISION HAND CRANKS:




Precision Hand Cranks

AVAILABLE IN:

Outer Diameter: 2 in.
Width: 1 1/4 in.
Inner Diameter: 0.1248 in. - 0.2498 in.













COMMERCIAL HANDLES:




Commercial Handles

AVAILABLE IN:

Materials: Aluminum, Brass, Stainless Steel
Height: 1 9/32 in. - 1 3/4 in.
Length: 3 in. - 9 in.













COMMERCIAL HEXAGONAL WRENCHES:




Commercial Hexagonal Wrenches

AVAILABLE IN:

Width: 0.028 in. (0.71mm) - 3/8 in.(6mm)
Length (mm only): 30 mm - 90 mm













COMMERCIAL KEYS & KEY STOCK:




Commercial Keys

AVAILABLE IN:

Width: 0.0625 in. (1.5mm) - 1.500 in. (16mm)
Length: 0.5 in. (6mm) - 3.0 ft. (63mm)













PRECISION KNURLED KNOBS:




Precision Knurled Knobs

AVAILABLE IN:

Inner Diameter: 0.1248 in. - 0.2498 in.
Outer Diameter: 1.0 in. - 2.0 in.













COMMERCIAL LUBRICANTS:




Commercial Lubricants

AVAILABLE IN:

Size:14 oz - 16 oz













COMMERCIAL MACHINE SCREWS:




Commercial Machine Screws

AVAILABLE IN:

Materials: Stainless Steel, Nylon
Length: 1/8 in. (4mm) - 2 in. (40mm)
**Priced Per 100 Pieces













COMMERCIAL NEG'ATOR SPRING MOTOR ASSEMBLIES:




Precision Neg'ator Springs

AVAILABLE IN:

Spring Torque (lb-in.): 0.1 - 15.5
Cable Tension (lbs): 0.375 - 15.000













COMMERCIAL NUTS:




Commercial Nuts

AVAILABLE IN:

Materials: Stainless Steel, Nylon, Steel
Thread Sizes: #0-80 in.(M1.6x0.35) 1/4-20 in. (M12x1.75)
**Priced Per 100 Pieces













COMMERCIAL PANEL BUSHINGS:




Commercial Panel Bushings

AVAILABLE IN:

Materials: Brass, Aluminum
Bore: 0.127 in. and 0.252 in.
Hex Nut: 3/8 in. - 1/2 in.













COMMERCIAL & PRECISION PINS:




Commercial Pins

AVAILABLE IN:

Diameter: 0.0312 in. (1mm) - 0.2502 in. (6mm)
Length: 0.094 in. (4mm) - 2.500 in. (80mm)
**Priced Per 100-1000 Pieces













PRECISION SPRING PLUNGERS:




Precision Plungers

AVAILABLE IN:

Diameter: M3 - M24
Length: 7 mm - 48 mm


When you need to align, hold, or latch different parts of equipment together, you need a spring loaded device. These components use the force in. the spring to apply pressure so that the ball or nose will remain. nested in. some sort of hole or other receptacle. Thus two or more elements of equipment can be aligned or fixed into a determined relative position.

Ball plungers have a ball instead of a nose, and no knob. The shallow depth of the ball allows for easy movement in. and out of position, but they do not perform well with heavy loads. BALL PLUNGERS are used for many locating applications in. dies, jigs, fixtures and other tooling. They are also used in. indexing automatic feed devices, for gear shifters, as locators in. progressive dies, in. torque-limiting clutches, for positioning levers, in. gauges... anywhere you need controlled end pressure.

Spring plungers have a ball designed to allow for movement when some side force is applied. in. other words, it isn’t necessary (or possible) to retract the nose mechanically. Consequently, these plungers are not appropriate if heavy side load is involved in. the application.






COMMERCIAL AND PRECISION RETAINING RINGS:




Commercial Retaining Rings

AVAILABLE IN:

Materials: Stainless Steel, Copper, Steel
Shaft Diameter: 0.25 in. (1mm) - 2.775 in. (26.2mm)
Ring Clearance Diameter: 0.22 in. (2mm) - 3.60 in. (143.1mm)
Groove Diameter: 0.26 in. (0.8mm) - 2.838 in. (116mm)














COMMERCIAL MOLDED SCREW INSULATORS:




Commercial Screw Insulators

AVAILABLE IN:

Inner Diameter: 0.09 in. - 0.26 in.
Outer Diameter: 0.120 in. - 0.312 in.











COMMERCIAL & PRECISION SET SCREWS:




Commercial and Precision Set Screws

AVAILABLE IN:

Materials: Stainless Steel, Steel, Nylon
Thread Size: #0-80in.(M2) - 1/4-20in.(M16x2)
Length: 1/16 in. (3mm)- 7/8 in. (53.3mm)











COMMERCIAL SHIMS & SPACERS:




Commercial Shims

AVAILABLE IN:

Materials: Stainless Steel, Steel, Brass
Inner Diameter: 0.125 in.(3mm) - 1.001 in.(18mm)
Outer Diameter: 0.1875 in.(3mm) - 1.500 in.(24mm)











COMMERCIAL & PRECISION SHOULDER SCREWS:




Commercial and Precision Shoulder Screws

AVAILABLE IN:

Thread Size: #4-40unc-3A(M2x0.4) - 1/4-20(M10x1.5)
Outer Diameter: 0.1875 in. (5.0mm) - 0.7500 in. (20mm)
Thread Length: 0.15625 in. (4mm) - 0.62500 in. (16mm)











COMMERCIAL SPRING-POWERED REELS:




Commercial Spir'ator Spring-Powered Reels

AVAILABLE IN:

Cable Length: 42 in. - 162 in.
Retracting Force (lbs): 0.5 - 35.0











PRECISION SPRING POSTS:




Precision Spring Posts

AVAILABLE IN:

Cable Length: 42 in. - 162 in.
Diameter: 1/8 in.(3mm) - 1/4 in.(6mm)










COMMERCIAL STAND-OFFS:




Commercial Stand-Offs

AVAILABLE IN:

Height: 1/8 in. - 1/2 in.
Length: 0.075 in. - 0.230 in.











PRECISION SYNCHRO MOUNTING CLAMPS:




Commercial Stand-Offs

AVAILABLE IN:

Material: Stainless Steel, Aluminum
Bore Size: 0.020 in. - 0.247 in.
Width: 0.038 in. - 0.272 in.











COMMERCIAL THREADED RODS:




Commercial Threaded Rods

AVAILABLE IN:

Material: Aluminum, Brass, Stainless Steel, Steel
**Priced Per 3 ft Rod











COMMERCIAL THUMB SCREWS & KNOBS:




Commercial Thumb Screws & Knobs

AVAILABLE IN:

Material: Acetal, Brass, Nylon
Screw Size: #4-40 - #10-32
Head Diameter: 5/16 in. (9.6mm) - 2 in. (45mm)
Screw Length:  1/4 in. - 1 1/2 in.











PRECISION TORSION SPRINGS:




Precision Torsion Springs

AVAILABLE IN:

Wire Diameter: 0.012 in. (0.3mm) - 0.063 in. (1.6mm)
Outer Diameter: 0.166 in. (4.24mm) - 1.000 in. (19.48mm)
Torque: 0.04 in. (0.5mm) - 5.15 in. (58.0mm)











COMMERCIAL & PRECISION WASHERS:




Commercial and Precision Washers

AVAILABLE IN:

Materials: Stainless Steel, Steel, Bronze, Nylon, PVC Copper
Inner Diameter: 0.062 in. (2.1mm) - 2.502 in. (25.0mm)
Outer Diameter: 0.156 in. (4.4mm) - 3.250 in. (44.0mm)









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