Spring Pins

We stock leaf spring pins for just about every type of semi truck and trailer. We have years of experience selling and installing replacement spring pins. Feel free to call us at 800-358-4751 if you need help finding the correct parts for your leaf springs.

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SKU B1400-55
$23.76

Threaded spring pin B1400-55 fits International front and rear of front spring applications. Use with MTB76 threaded bushing. 1.00 inch diameter, 7.   Details

20+ In Stock as of October 22, 2020 15:04 PM EST.
  • Application:International
  • Spring Pin Type:Threaded
  • Diameter:1.000 inches
  • Length:7.375 inches
  • Thread Size:1-3/8 inch -6
  • Center-To-Center:5.750 inches
  • Automann Number:M5268
  • Dayton Number:327-443
  • Flagg Number:B1400-55
  • Gaumers Number:21400
  • International Number:507203C1, 507203C2
  • Note:Use with MTB76 threaded bushing. Included in MIS1436, MIS1456 and MIS1476 shackle kits
  • MPN: B1400-55
SKU B1310-43
$13.40

Spring pin B1310-43 for rear of front spring. Fits Ford C-L-CLT-L-LNT-LT-LTS series. 6.125 inch length x 1 inch diameter, 4.875 inch center-to-center.   Details

20+ In Stock as of October 22, 2020 15:01 PM EST.
  • Application:Ford
  • Spring Pin Type:Smooth
  • Diameter:1.000 inch
  • Length:6.125 inches
  • Center-To-Center:4.875 inches
  • Automann Number:M5088
  • Dayton Number:327-211
  • Flagg Number:B1310-43
  • Ford Number:D0HZ5780F, E5HZ5780A
  • Gaumers Number:21310
  • Thomas Built Number:62300122
  • MPN: B1310-43
SKU B1311-43
$13.40

Spring pin B1311-43 for front spring front. Fits Ford C-L-CLT-L-LNT-LT-LTS series. 6.75 inch length x 1.0 inch diameter, 5.156 inch center-to-center.   Details

20+ In Stock as of October 22, 2020 15:01 PM EST.
  • Application:Ford
  • Spring Pin Type:Smooth
  • Diameter:1.000 inch
  • Length:6.750 inches
  • Center-To-Center:5.156 inches
  • Dayton Number:327-209
  • Flagg Number:B1311-43
  • Ford Number:D0HZ5780E, E5HZ5780B
  • Gaumers Number:21311
  • MPN: B1311-43
SKU B1408-46
$17.96

Spring pin B1408-46 fits Freightliner front of front spring applications. 4.0 inch spring width. 1.250 inch diameter, 6.906 inch length, 5.   Details

2 In Stock as of October 22, 2020 3:01 PM EST.
  • Application:Freightliner
  • Spring Pin Type:Smooth
  • Diameter:1.250 inches
  • Length:6.906 inches
  • Center-To-Center:5.375 inches
  • Automann Number:M5284
  • Dayton Number:327-487
  • Euclid Number:E8796
  • Flagg Number:B1408-46
  • Freightliner Number:1612373000, 16-12373-000
  • Gaumers Number:21408
  • Meritor Number:R308796
  • MPN: B1408-46
SKU B1491-96
$27.22

Threaded spring pin B1491-96 fits Mack and Volvo front spring applications. Fits Mack VN series. Greaseable to large head. Use with M1291 side bar. 1.   Details

12 In Stock as of October 22, 2020 3:06 PM EST.
  • Application:Volvo
  • Application:Mack
  • Spring Pin Type:Threaded
  • Diameter:1.181 inches
  • Length:6.692 inches
  • Thread Size:M33.5-4
  • Center-To-Center:5.551 inches
  • Automann Number:M5450
  • Flagg Number:B1491-96
  • Mack Number:10QK3105M, 10QK3106M, 10QK3112M, 10QK3113M
  • Volvo Number:1075723, 1076334
  • Note:Uses MTB180 threaded bushing
  • MPN: B1491-96
SKU 32277-000L
$18.39

Spring pin 32277-000L for Hendrickson applications. Uses MLP466 lock pin. 7.312 inch length, 1.375 inch diameter.   Details

2 In Stock as of October 22, 2020 3:02 PM EST.
  • Application:Hendrickson
  • Spring Pin Type:Smooth
  • Diameter:1.375 inches
  • Length:7.312 inches
  • Automann Number:M5224
  • Batco Number:09-5671
  • Dayton Number:3274-107
  • Euclid Number:E1818
  • Flagg Number:B1378-50
  • Gaumers Number:21378
  • Hendrickson Number:13938, 13938000, 32277, 32277000
  • Meritor Number:R301818
  • Midland Number:CS66665B
  • Note:Uses MLP466 lock pin
  • MPN: 32277-000L
SKU B1354-96
$18.24

Spring pin B1354-96 fits Volvo-White front spring applications. 1.125 inch diameter, 7.000 inch length, 5.50 inch center-to-center.   Details

3 In Stock as of October 22, 2020 3:09 PM EST.
  • Application:Volvo-White
  • Spring Pin Type:Smooth
  • Diameter:1.125 inches
  • Length:7.000 inches
  • Center-To-Center:5.500 inches
  • Automann Number:M5176
  • Dayton Number:327-384
  • Flagg Number:B1354-96
  • Gaumers Number:21354
  • GMC Number:3974787
  • Pierce Number:1006385, 40-6954
  • Thomas Built Number:62300122
  • Volvo Number:371210001 03, 3082276, 371210001, 371210003
  • MPN: B1354-96
SKU B1443-62
$41.10

Spring pin B1443-62 fits front of front spring applications on Mack MH, RW Models. 30mm diameter, 170mm length. Replaces Mack part 44QK202M.   Details

2 In Stock as of October 22, 2020 3:05 PM EST.
  • Application:Mack
  • Spring Pin Type:Smooth
  • Location:Front of Front
  • Diameter:30mm
  • Length:170mm
  • Center-To-Center:131mm
  • Automann Number:M5354
  • Dayton Number:327-484
  • Flagg Number:B1443, B1443-62
  • Mack Number:44QK202M
  • MPN: B1443-62
SKU B1538-43
$26.11

Spring pin B1538-43 fits front of rear, 3 inch wide spring for 2000 and newer Ford F650, F750 trucks. 5.50 inch length, 1.25 inch diameter, 4.   Details

6 In Stock as of October 22, 2020 3:01 PM EST.
  • Application:Ford
  • Spring Pin Type:Smooth
  • Diameter:1.250 inches
  • Length:5.500 inches
  • Center-To-Center:4.125 inches
  • Automann Number:M5091
  • Dayton Number:327-535
  • Flagg Number:B1538-43
  • Ford Number:F81Z5780BA
  • MPN: B1538-43
SKU B1205-43
$16.85

Spring pin B1205-43 fits International and Ford front of rear spring applications. Used on some single axle springs. 5.00 inch length x 1.   Details

6 In Stock as of October 22, 2020 3:04 PM EST.
  • Application:Ford
  • Application:International
  • Spring Pin Type:Smooth
  • Diameter:1.250 inches
  • Length:5.000 inches
  • Center-To-Center:4.000 inches
  • Automann Number:M4878
  • Dayton Number:327-212
  • Flagg Number:B1205-43
  • Ford Number:C3TZ5780A, D0HZ5780B
  • Gaumers Number:21205
  • International Number:97932HB, 190702R1
  • MPN: B1205-43
SKU M5305
$26.48

Spring pin M5305 fits Peterbilt front 4 inch spring applications. 1.25 inch diameter, 7.75 inch length, 6.50 inch center-to-center.   Details

5 In Stock as of October 22, 2020 3:08 PM EST.
  • Application:Peterbilt
  • Spring Pin Type:Smooth
  • Diameter:1.250 inches
  • Length:7.750 inches
  • Center-To-Center:6.500 inches
  • Automann Number:M5305
  • Dayton Number:327-532
  • Peterbilt Number:0204024, 02-04024, B656002, B65-6002
  • MPN: M5305
SKU 32276-000L
$17.66

Spring pin 32276-000L for Hendrickson applications. Uses MLP458 lock pin. 7.312 inch length, 1.250 inch diameter.   Details

Availability: Typically ships in 3 to 4 business days.
  • Application:Hendrickson
  • Spring Pin Type:Smooth
  • Diameter:1.250 inches
  • Length:7.312 inches
  • Automann Number:M4692
  • Batco Number:09-5670
  • BWP Number:M-2039, WA07-5055
  • Dayton Number:327-106
  • Euclid Number:E-1817
  • Flagg Number:B1112, B1112-50
  • Ford Number:D0HZ-5780-D, TWAA-5780-A.
  • GMC Number: 2017017, 2269445, 3814222
  • Haldex Number:CS66657
  • Hendrickson Number:32276, 32276000
  • Meritor Number:R301817
  • Midland Number:CS66657B
  • Navistar Number:443864C1
  • Volvo Number:718568, 718568A
  • MPN: 32276-000L

What is a leaf spring pin?

A spring pin is the pivot and attachment point used on many leaf spring suspensions using brass bushings. The spring pin will be made of hardened steel, and it may be smooth sided or threaded. Spring pins will be drilled and tapped for grease zircs and may have channels in the body to more effectively deliver grease to the spring bushings. Leaf spring pins may have notches cut into them where bolts are used to lock them into place and keep them centered.

Leaf Spring pin types

Leaf Spring Pin
  • Smooth Pins – Will be smooth down the body of the pin. Smooth spring pins will normally have one or two notches used to center the pin in the spring hanger and hold it into place. Some suspensions will require shimming to keep the spring centered on the pin during sideloading as there may be gaps between the spring and the frame hanger.

  • Leaf Spring Pin
  • Threaded Pins – Coarsely threaded like a large bolt, threaded pins will be used in threaded type spring bushings. Threaded spring pins may have the threaded area only in the center of the pin, or it may be down the length of the pin body. Threaded pins are used to help with spring movement due to side loading.

  • Why should you replace leaf spring pins?

    With the correct preventative maintenance, spring pins should last the life of the spring. With adequate grease, they can provide years of reliable use. When proper maintenance is skipped, the pins can wear or bind bringing an early need for replacement. When changing springs, it is always recommended to change the pins as the bushings, and the pins will wear together and re-using spring pins may cause your spring bushings to wear out rapidly. Lack of grease can cause damage to the spring and hanger bushings and may require replacement of the bushings or hangers as well as the pins. In severe cases, a spring pin can bind so badly in the bushing that the spring may break from the extra stress.

    Damaged Spring Pins

    Damaged Spring Pins Pictured

    Measuring Leaf spring pins for replacement and identification

    When replacing leaf spring pins, it is important to measure your old pins correctly to ensure a matching replacement can be ordered. Below you will find the information you should obtain before looking for replacement pins:

    • Vehicle application – Knowing the application will be necessary for threaded pins as there are no normal means of identifying the thread size and pitch used. The threads for threaded spring pins exceed what will normally be found on typical thread gauges for size and thread pitch. The application can also help narrow down pins that may be similar in dimension.
    • Pin diameter – Measure the diameter of the body of the pin where it will contact the spring bushing. If the pin in severely worn, it may be necessary to use information from the lead spring to order replacement pins. If the diameter of the pin changes on one or both ends also note that dimension.
    • Pin length – Measure the total length of the pin from end to end.
    • Distance between locking notches – If the pin had locking notched cut into it measure the center to center distance between the two. If only one notch is used, measure the distance between the center of the notch and the closest end of the pin.
    • Locking mechanism type – Spring pins with lock notches will use bolts, square keepers, or cotter pins. Identify the type used on your suspension setup and take note.
    • Grease zirc locations – Due to limited access some spring pins may have more than one grease zirc or multiple threaded holes for grease zircs. This will be important to ensure you can service the spring pin after the installation is done.

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