Home Miscellaneous Hooks & Snaps Spring Snap Hook (Stainless Steel, 3-1/8” L x 5/16” OD) Marpac Spring Snap Hook (Stainless Steel, 3-1/8” L x 5/16” OD) $7.29 Spring Snap Hook (Stainless Steel, 3-1/8” L x 5/16” OD) quantity Add to cart Product Details Product Details Length Overall: 3-1/8″. Gauge OD: 5/16″. Safe Working Load: 280 lbs. Breaking Strength: 1,100 lbs. Stainless steel. Spring loaded. Slide blister pack.