Adjustment Screws

Assembly

Lag screws aka lag bolts 002.png · Commons ↗ Report photo

Fine-tuning fasteners controlling opening speed, closing speed, and latch speed.

Direct parts	3
Total parts	3
Used in	1 assembly
Class	Assembly

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Fine-tuning fasteners controlling opening speed, closing speed, and latch speed. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Adjustment Screws parts and their functions

3 top-level parts · 3 parts in total · full bill of materials below

Adjustment Screws parts diagram: 1 main speed screw, 2 latch speed screw, 3 backcheck screw. 3 parts in 3 top-level items. — Adjustment Screws parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Main Speed Screw	1×	Closes 1–2 (typical closing speed)
2	Latch Speed Screw	1×	Closes 3–4 (final-inch closing)
3	Backcheck Screw	1×	Opening-speed control (optional)

3D model

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Build & assembly graph

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Bill of materials for Adjustment Screws

3 top-level lines · 3 rows shown · 3 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Main Speed Screw	door-closer-hydraulic-main-speed-screw	1×	1	·	part
2	Latch Speed Screw	door-closer-hydraulic-latch-speed-screw	1×	1	·	part
3	Backcheck Screw	door-closer-hydraulic-backcheck-screw	1×	1	·	part

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Where the adjustment screws is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Building & Construction Products 1 Hydraulic Door Closer

Used in 1 assembly

Hydraulic Door Closer

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.01–$2. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sundram Fasteners sundram.com ↗	Chennai, IN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Lakshmi Precision Screws lpsindia.com ↗	Rohtak, IN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Suzhou Escort escort-fastener.com ↗	Suzhou, CN	Fasteners	10,000 pcs	3–5 wks
🇨🇳Shanghai Tianbao tbfastener.com ↗	Shanghai, CN	Fasteners	10,000 pcs	3–5 wks
🇮🇳Sterling Tools sterlingtools.in ↗	Faridabad, IN	Fasteners	10,000 pcs	3–5 wks