Stainless steel ball plunger 0303x series

for heavy loadsspringball bearing

Product Summary
Ball-type spring plunger with hex end. The Long‑Lok nylon locking system prevents loosening from impact or vibration. Stainless sleeve, ball and spring for stainless variants; ball is hardened. Available in standard and heavy end force options.

Product Types

• 03036 — Spring Plungers w/ Nylon Locking (Stainless steel body and ball, standard end force)
• 03036 — Spring Plungers w/ Nylon Locking (Stainless steel body and ball, heavy end force)
• 03031 — Spring Plungers w/ Nylon Locking (Steel body and ball, standard end force)
• 03031 — Spring Plungers w/ Nylon Locking (Steel body and ball, heavy end force)

Part Options

• 03036-A2 | Thread 1/4-20 | D1 0.14 in | L 0.59 in | L1 0.28 in | H 0.04 in | S 1/8 in | F1 2.02 lbs | F2 2.92 lbs | PN 126530
• 03036-AJ | Thread 1/4-28 | D1 0.14 in | L 0.59 in | L1 0.28 in | H 0.04 in | S 1/8 in | F1 2.02 lbs | F2 2.92 lbs | PN 126559
• 03036-A3 | Thread 5/16-18 | D1 0.20 in | L 0.71 in | L1 0.31 in | H 0.06 in | S 5/32 in | F1 3.37 lbs | F2 6.74 lbs | PN 126534
• 03036-A4 | Thread 3/8-16 | D1 0.24 in | L 0.91 in | L1 0.35 in | H 0.08 in | S 3/16 in | F1 4.50 lbs | F2 7.87 lbs | PN 126536
• 03036-A5 | Thread 1/2-13 | D1 0.31 in | L 1.02 in | L1 0.39 in | H 0.10 in | S 7/32 in | F1 6.74 lbs | F2 12.36 lbs | PN 126554
• 03036-A6 | Thread 5/8-11 | D1 0.39 in | L 1.30 in | L1 0.55 in | H 0.14 in | S 5/16 in | F1 14.61 lbs | F2 28.10 lbs | PN 126556

Notes

• Units shown are inches and pounds (in, lbs).
• Thread sizes and dimensional values correspond to available SKUs indicated by Part Number / SKU.

Technical Specifications

• Type: Ball-type spring plunger with hex end.
• Locking: Long‑Lok nylon locking system to prevent loosening from impact or vibration.
• Materials: Stainless sleeve, stainless ball and stainless spring for stainless variants; steel body and ball available for steel variants.
• Finish: Stainless sleeves have a natural finish; ball is surface hardened.
• End force variants: Standard and Heavy end force options (see Part Options for F1 and F2 values).
• Available thread sizes/sample SKUs: 1/4-20 (03036-A2), 1/4-28 (03036-AJ), 5/16-18 (03036-A3), 3/8-16 (03036-A4), 1/2-13 (03036-A5), 5/8-11 (03036-A6).
• Dimensional tolerance: L1 tolerance ±0.02 in (as indicated in parts information).
• Series: 0303x family; part numbers include 03036 and 03031 variants.